diff --git a/stdlib/aws/s3/s3.cue b/stdlib/aws/s3/s3.cue
index 485755a6..99e8a20e 100644
--- a/stdlib/aws/s3/s3.cue
+++ b/stdlib/aws/s3/s3.cue
@@ -90,3 +90,80 @@ import (
 		]
 	}
 }
+
+// S3 Sync
+#Sync: {
+	// AWS Config
+	config: aws.#Config
+
+	// Source Artifact to upload to S3
+	source: dagger.#Artifact @dagger(input)
+
+	// Target S3 URL (eg. s3://<bucket-name>/<path>/<sub-path>)
+	target: string @dagger(input)
+
+	// Files that exist in the destination but not  in  the
+	// source are deleted during sync.
+	delete: *false | bool @dagger(input)
+
+	// Object content type
+	contentType: string | *"" @dagger(input)
+
+	// Always write the object to S3
+	always: bool | *true @dagger(input)
+
+	// URL of the uploaded S3 object
+	url: {
+		@dagger(output)
+		string
+
+		#up: [
+			op.#Load & {
+				from: aws.#CLI & {
+					"config": config
+				}
+			},
+
+			op.#Exec & {
+				if always != _|_ {
+					"always": always
+				}
+				env: {
+					TARGET:           target
+					OPT_CONTENT_TYPE: contentType
+					if delete {
+						OPT_DELETE: "1"
+					}
+				}
+
+				mount: "/source": from: source
+
+				args: [
+					"/bin/bash",
+					"--noprofile",
+					"--norc",
+					"-eo",
+					"pipefail",
+					"-c",
+					#"""
+						opts=()
+						if [ -d /source ]; then
+							op=sync
+						fi
+						[ -n "$OPT_CONTENT_TYPE" ] && opts+="--content-type $OPT_CONTENT_TYPE"
+						[ -n "$OPT_DELETE" ] && opts+="--delete"
+						aws s3 sync ${opts[@]} /source "$TARGET"
+						echo -n "$TARGET" \
+							| sed -E 's=^s3://([^/]*)/=https://\1.s3.amazonaws.com/=' \
+							> /url
+						"""#,
+				]
+			},
+
+			op.#Export & {
+				source: "/url"
+				format: "string"
+			},
+		]
+	}
+}
diff --git a/tests/stdlib/aws/s3/.dagger/env/default/plan/s3.cue b/tests/stdlib/aws/s3/.dagger/env/default/plan/s3.cue
index e5a9f690..8968493c 100644
--- a/tests/stdlib/aws/s3/.dagger/env/default/plan/s3.cue
+++ b/tests/stdlib/aws/s3/.dagger/env/default/plan/s3.cue
@@ -49,3 +49,23 @@ TestS3UploadDir: {
 		file:   "foo.txt"
 	}
 }
+
+TestS3Sync: {
+	deploy: s3.#Sync & {
+		config: TestConfig.awsConfig
+		source: TestDirectory
+		target: "s3://\(bucket)/"
+	}
+
+	verifyFile: #VerifyS3 & {
+		config: TestConfig.awsConfig
+		target: deploy.target
+		file:   "dirFile.txt"
+	}
+
+	verifyDir: #VerifyS3 & {
+		config: TestConfig.awsConfig
+		target: deploy.target
+		file:   "foo.txt"
+	}
+}