diff --git a/Sources/AWSLambdaEvents/Cloudwatch.swift b/Sources/AWSLambdaEvents/Cloudwatch.swift
index 36e4010..0895b81 100644
--- a/Sources/AWSLambdaEvents/Cloudwatch.swift
+++ b/Sources/AWSLambdaEvents/Cloudwatch.swift
@@ -135,3 +135,463 @@ public enum CloudwatchDetails {
         let type: any CloudwatchDetail.Type
     }
 }
+
+// MARK: - S3 Event Notification
+
+/// https://docs.aws.amazon.com/AmazonS3/latest/userguide/ev-events.html
+
+public typealias CloudWatchS3ObjectCreatedNotificationEvent = CloudwatchEvent<CloudwatchDetails.S3.ObjectCreatedNotification>
+public typealias CloudWatchS3ObjectDeletedNotificationEvent = CloudwatchEvent<CloudwatchDetails.S3.ObjectDeletedNotification>
+public typealias CloudWatchS3ObjectRestoreInitiatedNotificationEvent = CloudwatchEvent<CloudwatchDetails.S3.ObjectRestoreInitiatedNotification>
+public typealias CloudWatchS3ObjectRestoreCompletedNotificationEvent = CloudwatchEvent<CloudwatchDetails.S3.ObjectRestoreCompletedNotification>
+public typealias CloudWatchS3ObjectRestoreExpiredNotificationEvent = CloudwatchEvent<CloudwatchDetails.S3.ObjectRestoreExpiredNotification>
+public typealias CloudWatchS3ObjectStorageClassChangedNotificationEvent = CloudwatchEvent<CloudwatchDetails.S3.ObjectStorageClassChangedNotification>
+public typealias CloudWatchS3ObjectAccessTierChangedNotificationEvent = CloudwatchEvent<CloudwatchDetails.S3.ObjectAccessTierChangedNotification>
+public typealias CloudWatchS3ObjectACLUpdatedNotificationEvent = CloudwatchEvent<CloudwatchDetails.S3.ObjectACLUpdatedNotification>
+public typealias CloudWatchS3ObjectTagsAddedNotificationEvent = CloudwatchEvent<CloudwatchDetails.S3.ObjectTagsAddedNotification>
+public typealias CloudWatchS3ObjectTagsDeletedNotificationEvent = CloudwatchEvent<CloudwatchDetails.S3.ObjectTagsDeletedNotification>
+
+extension CloudwatchDetails {
+    public enum S3: Sendable {
+        public struct ObjectCreatedNotification: CloudwatchDetail {
+            public static let name: String = "Object Created"
+
+            public struct Bucket: Codable, Sendable {
+                public let name: String
+            }
+
+            public struct Object: Codable, Sendable {
+                public let key: String
+                public let size: UInt64
+                public let etag: String
+                public let versionId: String?
+                public let sequencer: String
+
+                enum CodingKeys: String, CodingKey {
+                    case key
+                    case size
+                    case etag
+                    case versionId = "version-id"
+                    case sequencer
+                }
+            }
+
+            public enum Reason: String, Codable, Sendable {
+                case putObject = "PutObject"
+                case postObject = "POST Object"
+                case copyObject = "CopyObject"
+                case completeMultipartUpload = "CompleteMultipartUpload"
+            }
+
+            public let version: String
+            public let bucket: Bucket
+			public let object: Object
+            public let requestId: String
+            public let requester: String
+            public let sourceIpAddress: String
+            public let reason: Reason
+
+            enum CodingKeys: String, CodingKey {
+                case version
+                case bucket
+				case object
+                case requestId = "request-id"
+                case requester
+                case sourceIpAddress = "source-ip-address"
+                case reason
+            }
+        }
+
+        public struct ObjectDeletedNotification: CloudwatchDetail {
+            public static let name: String = "Object Deleted"
+
+            public struct Bucket: Codable, Sendable {
+                public let name: String
+            }
+
+            public struct Object: Codable, Sendable {
+                public let key: String
+                public let etag: String
+                public let versionId: String?
+                public let sequencer: String
+
+                enum CodingKeys: String, CodingKey {
+                    case key
+                    case etag
+                    case versionId = "version-id"
+                    case sequencer
+                }
+            }
+
+            public enum Reason: String, Codable, Sendable {
+                case deleteObject = "DeleteObject"
+                case lifecycleExpiration = "Lifecycle Expiration"
+            }
+
+            public enum DeletionType: String, Codable, Sendable {
+                case permanentlyDeleted = "Permanently Deleted"
+                case deleteMarkerCreated = "Delete Marker Created"
+            }
+
+            public let version: String
+            public let bucket: Bucket
+			public let object: Object
+            public let requestId: String
+            public let requester: String
+            public let sourceIpAddress: String
+            public let reason: Reason
+            public let deletionType: DeletionType
+
+            enum CodingKeys: String, CodingKey {
+                case version
+                case bucket
+				case object
+                case requestId = "request-id"
+                case requester
+                case sourceIpAddress = "source-ip-address"
+                case reason
+                case deletionType = "deletion-type"
+            }
+        }
+
+        public struct ObjectRestoreInitiatedNotification: CloudwatchDetail {
+            public static let name: String = "Object Restore Initiated"
+
+            public struct Bucket: Codable, Sendable {
+                public let name: String
+            }
+
+            public struct Object: Codable, Sendable {
+                public let key: String
+                public let size: UInt64
+                public let etag: String
+                public let versionId: String?
+
+                enum CodingKeys: String, CodingKey {
+                    case key
+                    case size
+                    case etag
+                    case versionId = "version-id"
+                }
+            }
+
+            public enum SourceStorageClass: String, Codable, Sendable {
+                case standard = "STANDARD"
+                case reducedRedundancy = "REDUCED_REDUNDANCY"
+                case standardIA = "STANDARD_IA"
+                case onezoneIA = "ONEZONE_IA"
+                case intelligentTiering = "INTELLIGENT_TIERING"
+                case glacier = "GLACIER"
+                case deepArchive = "DEEP_ARCHIVE"
+                case outposts = "OUTPOSTS"
+                case glacierIr = "GLACIER_IR"
+            }
+
+            public let version: String
+            public let bucket: Bucket
+            public let object: Object
+            public let requestId: String
+            public let requester: String
+            public let sourceIpAddress: String
+            public let sourceStorageClass: SourceStorageClass
+
+            enum CodingKeys: String, CodingKey {
+                case version
+                case bucket
+                case object
+                case requestId = "request-id"
+                case requester
+                case sourceIpAddress = "source-ip-address"
+                case sourceStorageClass = "source-storage-class"
+            }
+        }
+
+        public struct ObjectRestoreCompletedNotification: CloudwatchDetail {
+            public static let name: String = "Object Restore Completed"
+
+            public struct Bucket: Codable, Sendable {
+                public let name: String
+            }
+
+            public struct Object: Codable, Sendable {
+                public let key: String
+                public let size: UInt64
+                public let etag: String
+                public let versionId: String?
+
+                enum CodingKeys: String, CodingKey {
+                    case key
+                    case size
+                    case etag
+                    case versionId = "version-id"
+                }
+            }
+
+            public enum SourceStorageClass: String, Codable, Sendable {
+                case standard = "STANDARD"
+                case reducedRedundancy = "REDUCED_REDUNDANCY"
+                case standardIA = "STANDARD_IA"
+                case onezoneIA = "ONEZONE_IA"
+                case intelligentTiering = "INTELLIGENT_TIERING"
+                case glacier = "GLACIER"
+                case deepArchive = "DEEP_ARCHIVE"
+                case outposts = "OUTPOSTS"
+                case glacierIr = "GLACIER_IR"
+            }
+
+            public let version: String
+            public let bucket: Bucket
+            public let object: Object
+            public let requestId: String
+            public let requester: String
+			@ISO8601Coding
+            public var restoreExpiryTime: Date
+            public let sourceStorageClass: SourceStorageClass
+
+            enum CodingKeys: String, CodingKey {
+                case version
+                case bucket
+                case object
+                case requestId = "request-id"
+                case requester
+                case restoreExpiryTime = "restore-expiry-time"
+                case sourceStorageClass = "source-storage-class"
+            }
+        }
+
+        public struct ObjectRestoreExpiredNotification: CloudwatchDetail {
+            public static let name: String = "Object Restore Expired"
+
+            public struct Bucket: Codable, Sendable {
+                public let name: String
+            }
+
+            public struct Object: Codable, Sendable {
+                public let key: String
+                public let etag: String
+                public let versionId: String?
+
+                enum CodingKeys: String, CodingKey {
+                    case key
+                    case etag
+                    case versionId = "version-id"
+                }
+            }
+
+            public let version: String
+            public let bucket: Bucket
+            public let object: Object
+            public let requestId: String
+            public let requester: String
+
+            enum CodingKeys: String, CodingKey {
+                case version
+                case bucket
+                case object
+                case requestId = "request-id"
+                case requester
+            }
+        }
+
+        public struct ObjectStorageClassChangedNotification: CloudwatchDetail {
+            public static let name: String = "Object Storage Class Changed"
+
+            public struct Bucket: Codable, Sendable {
+                public let name: String
+            }
+
+            public struct Object: Codable, Sendable {
+                public let key: String
+                public let size: UInt64
+                public let etag: String
+                public let versionId: String?
+
+                enum CodingKeys: String, CodingKey {
+                    case key
+                    case size
+                    case etag
+                    case versionId = "version-id"
+                }
+            }
+
+            public enum DestinationStorageClass: String, Codable, Sendable {
+                case standard = "STANDARD"
+                case reducedRedundancy = "REDUCED_REDUNDANCY"
+                case standardIA = "STANDARD_IA"
+                case onezoneIA = "ONEZONE_IA"
+                case intelligentTiering = "INTELLIGENT_TIERING"
+                case glacier = "GLACIER"
+                case deepArchive = "DEEP_ARCHIVE"
+                case outposts = "OUTPOSTS"
+                case glacierIr = "GLACIER_IR"
+            }
+
+            public let version: String
+            public let bucket: Bucket
+            public let object: Object
+            public let requestId: String
+            public let requester: String
+            public let destinationStorageClass: DestinationStorageClass
+
+            enum CodingKeys: String, CodingKey {
+                case version
+                case bucket
+                case object
+                case requestId = "request-id"
+                case requester
+                case destinationStorageClass = "destination-storage-class"
+            }
+        }
+
+        public struct ObjectAccessTierChangedNotification: CloudwatchDetail {
+            public static let name: String = "Object Access Tier Changed"
+
+            public struct Bucket: Codable, Sendable {
+                public let name: String
+            }
+
+            public struct Object: Codable, Sendable {
+                public let key: String
+                public let size: UInt64
+                public let etag: String
+                public let versionId: String?
+
+                enum CodingKeys: String, CodingKey {
+                    case key
+                    case size
+                    case etag
+                    case versionId = "version-id"
+                }
+            }
+
+            public enum DestinationAccessTier: String, Codable, Sendable {
+                case archiveAccess = "ARCHIVE_ACCESS"
+                case deepArchiveAccess = "DEEP_ARCHIVE_ACCESS"
+            }
+
+            public let version: String
+            public let bucket: Bucket
+            public let object: Object
+            public let requestId: String
+            public let requester: String
+            public let destinationAccessTier: DestinationAccessTier
+
+            enum CodingKeys: String, CodingKey {
+                case version
+                case bucket
+                case object
+                case requestId = "request-id"
+                case requester
+                case destinationAccessTier = "destination-access-tier"
+            }
+        }
+
+        public struct ObjectACLUpdatedNotification: CloudwatchDetail {
+            public static let name: String = "Object ACL Updated"
+
+            public struct Bucket: Codable, Sendable {
+                public let name: String
+            }
+
+            public struct Object: Codable, Sendable {
+                public let key: String
+                public let etag: String
+                public let versionId: String?
+
+                enum CodingKeys: String, CodingKey {
+                    case key
+                    case etag
+                    case versionId = "version-id"
+                }
+            }
+
+            public let version: String
+            public let bucket: Bucket
+            public let object: Object
+            public let requestId: String
+            public let requester: String
+            public let sourceIpAddress: String
+
+            enum CodingKeys: String, CodingKey {
+                case version
+                case bucket
+                case object
+                case requestId = "request-id"
+                case requester
+                case sourceIpAddress = "source-ip-address"
+            }
+        }
+
+        public struct ObjectTagsAddedNotification: CloudwatchDetail {
+            public static let name: String = "Object Tags Added"
+
+            public struct Bucket: Codable, Sendable {
+                public let name: String
+            }
+
+            public struct Object: Codable, Sendable {
+                public let key: String
+                public let etag: String
+                public let versionId: String?
+
+                enum CodingKeys: String, CodingKey {
+                    case key
+                    case etag
+                    case versionId = "version-id"
+                }
+            }
+
+            public let version: String
+            public let bucket: Bucket
+            public let object: Object
+            public let requestId: String
+            public let requester: String
+            public let sourceIpAddress: String
+
+            enum CodingKeys: String, CodingKey {
+                case version
+                case bucket
+                case object
+                case requestId = "request-id"
+                case requester
+                case sourceIpAddress = "source-ip-address"
+            }
+        }
+
+        public struct ObjectTagsDeletedNotification: CloudwatchDetail {
+            public static let name: String = "Object Tags Deleted"
+
+            public struct Bucket: Codable, Sendable {
+                public let name: String
+            }
+
+            public struct Object: Codable, Sendable {
+                public let key: String
+                public let etag: String
+                public let versionId: String?
+
+                enum CodingKeys: String, CodingKey {
+                    case key
+                    case etag
+                    case versionId = "version-id"
+                }
+            }
+
+            public let version: String
+            public let bucket: Bucket
+            public let object: Object
+            public let requestId: String
+            public let requester: String
+            public let sourceIpAddress: String
+
+            enum CodingKeys: String, CodingKey {
+                case version
+                case bucket
+                case object
+                case requestId = "request-id"
+                case requester
+                case sourceIpAddress = "source-ip-address"
+            }
+        }
+    }
+}
diff --git a/Tests/AWSLambdaEventsTests/CloudwatchTests.swift b/Tests/AWSLambdaEventsTests/CloudwatchTests.swift
index 01d63eb..5ebb455 100644
--- a/Tests/AWSLambdaEventsTests/CloudwatchTests.swift
+++ b/Tests/AWSLambdaEventsTests/CloudwatchTests.swift
@@ -101,6 +101,110 @@ class CloudwatchTests: XCTestCase {
         XCTAssertEqual(event.detail.instanceId, "0")
         XCTAssertEqual(event.detail.action, .terminate)
     }
+	
+	func testS3ObjectCreatedEventFromJSON() {
+		let eventBody = CloudwatchTests.eventBody(
+			type: CloudwatchDetails.S3.ObjectCreatedNotification.name,
+			details: "{ \"version\": \"0\", \"bucket\": { \"name\": \"amzn-s3-demo-bucket1\" }, \"object\": { \"key\": \"example-key\", \"size\":5, \"etag\": \"b1946ac92492d2347c6235b4d2611184\", \"version-id\": \"IYV3p45BT0ac8hjHg1houSdS1a.Mro8e\", \"sequencer\": \"617f08299329d189\" }, \"request-id\": \"N4N7GDK58NMKJ12R\", \"requester\": \"123456789012\", \"source-ip-address\": \"1.2.3.4\", \"reason\": \"PutObject\" }"
+
+		)
+		let data = eventBody.data(using: .utf8)!
+		var maybeEvent: CloudWatchS3ObjectCreatedNotificationEvent?
+		XCTAssertNoThrow(
+			maybeEvent = try JSONDecoder().decode(CloudWatchS3ObjectCreatedNotificationEvent.self, from: data)
+		)
+		
+		guard let event = maybeEvent else {
+			return XCTFail("Expected to have an event")
+		}
+		
+		XCTAssertEqual(event.id, "cdc73f9d-aea9-11e3-9d5a-835b769c0d9c")
+		XCTAssertEqual(event.source, "aws.events")
+		XCTAssertEqual(event.accountId, "123456789012")
+		XCTAssertEqual(event.time, Date(timeIntervalSince1970: 0))
+		XCTAssertEqual(event.region, .us_east_1)
+		XCTAssertEqual(event.resources, ["arn:aws:events:us-east-1:123456789012:rule/ExampleRule"])
+		XCTAssertEqual(event.detail.version, "0")
+		XCTAssertEqual(event.detail.bucket.name, "amzn-s3-demo-bucket1")
+		XCTAssertEqual(event.detail.object.key, "example-key")
+		XCTAssertEqual(event.detail.object.size, 5)
+		XCTAssertEqual(event.detail.object.etag, "b1946ac92492d2347c6235b4d2611184")
+		XCTAssertEqual(event.detail.object.versionId, "IYV3p45BT0ac8hjHg1houSdS1a.Mro8e")
+		XCTAssertEqual(event.detail.object.sequencer, "617f08299329d189")
+		XCTAssertEqual(event.detail.requestId, "N4N7GDK58NMKJ12R")
+		XCTAssertEqual(event.detail.requester, "123456789012")
+		XCTAssertEqual(event.detail.sourceIpAddress, "1.2.3.4")
+		XCTAssertEqual(event.detail.reason, .putObject)
+	}
+	
+	func testS3ObjectDeletedEventFromJSON() {
+		let eventBody = CloudwatchTests.eventBody(
+			type: CloudwatchDetails.S3.ObjectDeletedNotification.name,
+			details: "{ \"version\": \"0\", \"bucket\": { \"name\": \"amzn-s3-demo-bucket1\" }, \"object\": { \"key\": \"example-key\", \"etag\": \"d41d8cd98f00b204e9800998ecf8427e\", \"version-id\": \"1QW9g1Z99LUNbvaaYVpW9xDlOLU.qxgF\", \"sequencer\": \"617f0837b476e463\" }, \"request-id\": \"0BH729840619AG5K\", \"requester\": \"123456789012\", \"source-ip-address\": \"1.2.3.4\", \"reason\": \"DeleteObject\", \"deletion-type\": \"Delete Marker Created\" }"
+			
+		)
+		let data = eventBody.data(using: .utf8)!
+		var maybeEvent: CloudWatchS3ObjectDeletedNotificationEvent?
+		XCTAssertNoThrow(
+			maybeEvent = try JSONDecoder().decode(CloudWatchS3ObjectDeletedNotificationEvent.self, from: data)
+		)
+		
+		guard let event = maybeEvent else {
+			return XCTFail("Expected to have an event")
+		}
+		
+		XCTAssertEqual(event.id, "cdc73f9d-aea9-11e3-9d5a-835b769c0d9c")
+		XCTAssertEqual(event.source, "aws.events")
+		XCTAssertEqual(event.accountId, "123456789012")
+		XCTAssertEqual(event.time, Date(timeIntervalSince1970: 0))
+		XCTAssertEqual(event.region, .us_east_1)
+		XCTAssertEqual(event.resources, ["arn:aws:events:us-east-1:123456789012:rule/ExampleRule"])
+		XCTAssertEqual(event.detail.version, "0")
+		XCTAssertEqual(event.detail.bucket.name, "amzn-s3-demo-bucket1")
+		XCTAssertEqual(event.detail.object.key, "example-key")
+		XCTAssertEqual(event.detail.object.etag, "d41d8cd98f00b204e9800998ecf8427e")
+		XCTAssertEqual(event.detail.object.versionId, "1QW9g1Z99LUNbvaaYVpW9xDlOLU.qxgF")
+		XCTAssertEqual(event.detail.object.sequencer, "617f0837b476e463")
+		XCTAssertEqual(event.detail.requestId, "0BH729840619AG5K")
+		XCTAssertEqual(event.detail.requester, "123456789012")
+		XCTAssertEqual(event.detail.sourceIpAddress, "1.2.3.4")
+		XCTAssertEqual(event.detail.reason, .deleteObject)
+		XCTAssertEqual(event.detail.deletionType, .deleteMarkerCreated)
+	}
+	
+	func testS3ObjectRestoreCompletedEventFromJSON() {
+		let eventBody = CloudwatchTests.eventBody(
+			type: CloudwatchDetails.S3.ObjectRestoreCompletedNotification.name,
+			details: "{ \"version\": \"0\", \"bucket\": { \"name\": \"amzn-s3-demo-bucket1\" }, \"object\": { \"key\": \"example-key\", \"size\": 5, \"etag\": \"b1946ac92492d2347c6235b4d2611184\", \"version-id\": \"KKsjUC1.6gIjqtvhfg5AdMI0eCePIiT3\" }, \"request-id\": \"189F19CB7FB1B6A4\", \"requester\": \"s3.amazonaws.com\", \"restore-expiry-time\": \"2021-11-13T00:00:00Z\", \"source-storage-class\": \"GLACIER\" }"
+			
+		)
+		let data = eventBody.data(using: .utf8)!
+		var maybeEvent: CloudWatchS3ObjectRestoreCompletedNotificationEvent?
+		XCTAssertNoThrow(
+			maybeEvent = try JSONDecoder().decode(CloudWatchS3ObjectRestoreCompletedNotificationEvent.self, from: data)
+		)
+		
+		guard let event = maybeEvent else {
+			return XCTFail("Expected to have an event")
+		}
+		
+		XCTAssertEqual(event.id, "cdc73f9d-aea9-11e3-9d5a-835b769c0d9c")
+		XCTAssertEqual(event.source, "aws.events")
+		XCTAssertEqual(event.accountId, "123456789012")
+		XCTAssertEqual(event.time, Date(timeIntervalSince1970: 0))
+		XCTAssertEqual(event.region, .us_east_1)
+		XCTAssertEqual(event.resources, ["arn:aws:events:us-east-1:123456789012:rule/ExampleRule"])
+		XCTAssertEqual(event.detail.version, "0")
+		XCTAssertEqual(event.detail.bucket.name, "amzn-s3-demo-bucket1")
+		XCTAssertEqual(event.detail.object.key, "example-key")
+		XCTAssertEqual(event.detail.object.size, 5)
+		XCTAssertEqual(event.detail.object.etag, "b1946ac92492d2347c6235b4d2611184")
+		XCTAssertEqual(event.detail.object.versionId, "KKsjUC1.6gIjqtvhfg5AdMI0eCePIiT3")
+		XCTAssertEqual(event.detail.requestId, "189F19CB7FB1B6A4")
+		XCTAssertEqual(event.detail.requester, "s3.amazonaws.com")
+		XCTAssertEqual(event.detail.restoreExpiryTime.description, "2021-11-13 00:00:00 +0000")
+		XCTAssertEqual(event.detail.sourceStorageClass, .glacier)
+	}
 
     func testCustomEventFromJSON() {
         struct Custom: CloudwatchDetail {