diff --git a/packages/storage/__tests__/providers/s3/utils/client/S3/cases/listCallerAccessGrants.ts b/packages/storage/__tests__/providers/s3/utils/client/S3/cases/listCallerAccessGrants.ts
index 29a8e3f4516..1a72a2049bc 100644
--- a/packages/storage/__tests__/providers/s3/utils/client/S3/cases/listCallerAccessGrants.ts
+++ b/packages/storage/__tests__/providers/s3/utils/client/S3/cases/listCallerAccessGrants.ts
@@ -17,11 +17,11 @@ const MOCK_GRANT_SCOPE = 's3://my-bucket/path/to/object.md';
 const MOCK_PERMISSION = 'READWRITE';
 
 // API Reference: https://docs.aws.amazon.com/AmazonS3/latest/API/API_control_ListAccessGrants.html
-const listCallerAccessGrantsHappyCase: ApiFunctionalTestCase<
+const listCallerAccessGrantsHappyCaseSingleGrant: ApiFunctionalTestCase<
 	typeof listCallerAccessGrants
 > = [
 	'happy case',
-	'listCallerAccessGrants',
+	'listCallerAccessGrantsHappyCaseSingleGrant',
 	listCallerAccessGrants,
 	defaultConfig,
 	{
@@ -71,6 +71,70 @@ const listCallerAccessGrantsHappyCase: ApiFunctionalTestCase<
 	},
 ];
 
+const listCallerAccessGrantsHappyCaseMultipleGrants: ApiFunctionalTestCase<
+	typeof listCallerAccessGrants
+> = [
+	'happy case',
+	'listCallerAccessGrantsHappyCaseMultipleGrants',
+	listCallerAccessGrants,
+	defaultConfig,
+	{
+		AccountId: MOCK_ACCOUNT_ID,
+		GrantScope: 's3://my-bucket/path/to/',
+		MaxResults: 50,
+		NextToken: 'mockToken',
+	},
+	expect.objectContaining({
+		url: expect.objectContaining({
+			href: 'https://accountid.s3-control.us-east-1.amazonaws.com/v20180820/accessgrantsinstance/caller/grants?grantscope=s3%3A%2F%2Fmy-bucket%2Fpath%2Fto%2F&maxResults=50&nextToken=mockToken',
+		}),
+		method: 'GET',
+		headers: expect.objectContaining({
+			'x-amz-account-id': MOCK_ACCOUNT_ID,
+		}),
+	}),
+	{
+		status: 200,
+		headers: {
+			...DEFAULT_RESPONSE_HEADERS,
+		},
+		body: `
+		<?xml version="1.0" encoding="UTF-8"?>
+		<ListCallerAccessGrantsResult>
+			<NextToken>${MOCK_NEXT_TOKEN}</NextToken>
+			<CallerAccessGrantsList>
+				<AccessGrantsInstance>
+						<ApplicationArn>${MOCK_APP_ARN}</ApplicationArn>
+						<GrantScope>${MOCK_GRANT_SCOPE}</GrantScope>
+						<Permission>${MOCK_PERMISSION}</Permission>
+				</AccessGrantsInstance>
+				<AccessGrantsInstance>
+						<ApplicationArn>${MOCK_APP_ARN}</ApplicationArn>
+						<GrantScope>${MOCK_GRANT_SCOPE}</GrantScope>
+						<Permission>${MOCK_PERMISSION}</Permission>
+				</AccessGrantsInstance>
+			</CallerAccessGrantsList>
+		</ListCallerAccessGrantsResult>
+	`,
+	},
+	{
+		$metadata: expect.objectContaining(expectedMetadata),
+		CallerAccessGrantsList: [
+			{
+				ApplicationArn: MOCK_APP_ARN,
+				GrantScope: MOCK_GRANT_SCOPE,
+				Permission: MOCK_PERMISSION,
+			},
+			{
+				ApplicationArn: MOCK_APP_ARN,
+				GrantScope: MOCK_GRANT_SCOPE,
+				Permission: MOCK_PERMISSION,
+			},
+		],
+		NextToken: MOCK_NEXT_TOKEN,
+	},
+];
+
 const listCallerAccessGrantsErrorCase: ApiFunctionalTestCase<
 	typeof listCallerAccessGrants
 > = [
@@ -78,8 +142,8 @@ const listCallerAccessGrantsErrorCase: ApiFunctionalTestCase<
 	'listCallerAccessGrants',
 	listCallerAccessGrants,
 	defaultConfig,
-	listCallerAccessGrantsHappyCase[4],
-	listCallerAccessGrantsHappyCase[5],
+	listCallerAccessGrantsHappyCaseSingleGrant[4],
+	listCallerAccessGrantsHappyCaseSingleGrant[5],
 	{
 		status: 403,
 		headers: DEFAULT_RESPONSE_HEADERS,
@@ -100,6 +164,7 @@ const listCallerAccessGrantsErrorCase: ApiFunctionalTestCase<
 ];
 
 export default [
-	listCallerAccessGrantsHappyCase,
+	listCallerAccessGrantsHappyCaseSingleGrant,
+	listCallerAccessGrantsHappyCaseMultipleGrants,
 	listCallerAccessGrantsErrorCase,
 ];
diff --git a/packages/storage/src/providers/s3/utils/client/s3control/listCallerAccessGrants.ts b/packages/storage/src/providers/s3/utils/client/s3control/listCallerAccessGrants.ts
index 3c95369fb99..8728ab19832 100644
--- a/packages/storage/src/providers/s3/utils/client/s3control/listCallerAccessGrants.ts
+++ b/packages/storage/src/providers/s3/utils/client/s3control/listCallerAccessGrants.ts
@@ -70,7 +70,11 @@ const listCallerAccessGrantsDeserializer = async (
 		const contents = map(parsed, {
 			CallerAccessGrantsList: [
 				'CallerAccessGrantsList',
-				value => emptyArrayGuard(value, deserializeAccessGrantsList),
+				value =>
+					emptyArrayGuard(
+						value.AccessGrantsInstance,
+						deserializeAccessGrantsList,
+					),
 			],
 			NextToken: 'NextToken',
 		});
@@ -86,7 +90,7 @@ const deserializeAccessGrantsList = (output: any[]) =>
 	output.map(deserializeCallerAccessGrant);
 
 const deserializeCallerAccessGrant = (output: any) =>
-	map(output.AccessGrantsInstance, {
+	map(output, {
 		ApplicationArn: 'ApplicationArn',
 		GrantScope: 'GrantScope',
 		Permission: 'Permission',