diff --git a/packages/block-library/src/gallery/index.js b/packages/block-library/src/gallery/index.js
index a3c5eb00fd38d3..b684aa8faef733 100644
--- a/packages/block-library/src/gallery/index.js
+++ b/packages/block-library/src/gallery/index.js
@@ -1,7 +1,7 @@
 /**
  * WordPress dependencies
  */
-import { __ } from '@wordpress/i18n';
+import { __, _x } from '@wordpress/i18n';
 
 /**
  * Internal dependencies
@@ -25,6 +25,10 @@ export const settings = {
 	supports: {
 		align: true,
 	},
+	styles: [
+		{ name: 'default', label: _x( 'Default', 'block style' ), isDefault: true },
+		{ name: 'rounded-corners', label: _x( 'Rounded Corners', 'block style' ) },
+	],
 	transforms,
 	edit,
 	save,
diff --git a/packages/block-library/src/gallery/style.scss b/packages/block-library/src/gallery/style.scss
index df60d6fd1fc9b6..d7ac63b81567ad 100644
--- a/packages/block-library/src/gallery/style.scss
+++ b/packages/block-library/src/gallery/style.scss
@@ -147,4 +147,17 @@
 			justify-content: center;
 		}
 	}
+
+	// Rounded corners block style
+	&.is-style-rounded-corners {
+
+		img {
+			border-radius: $grid-size;
+		}
+
+		figcaption {
+			border-bottom-right-radius: $grid-size;
+			border-bottom-left-radius: $grid-size;
+		}
+	}
 }
diff --git a/packages/block-library/src/image/index.js b/packages/block-library/src/image/index.js
index 7d72cc6c103f3f..facf36b1382f87 100644
--- a/packages/block-library/src/image/index.js
+++ b/packages/block-library/src/image/index.js
@@ -1,7 +1,7 @@
 /**
  * WordPress dependencies
  */
-import { __ } from '@wordpress/i18n';
+import { __, _x } from '@wordpress/i18n';
 
 /**
  * Internal dependencies
@@ -25,6 +25,10 @@ export const settings = {
 		'img', // "img" is not translated as it is intended to reflect the HTML <img> tag.
 		__( 'photo' ),
 	],
+	styles: [
+		{ name: 'default', label: _x( 'Default', 'block style' ), isDefault: true },
+		{ name: 'rounded-corners', label: _x( 'Rounded Corners', 'block style' ) },
+	],
 	transforms,
 	getEditWrapperProps( attributes ) {
 		const { align, width } = attributes;
diff --git a/packages/block-library/src/image/style.scss b/packages/block-library/src/image/style.scss
index 0ce4d929d426dc..8694da72f23d17 100644
--- a/packages/block-library/src/image/style.scss
+++ b/packages/block-library/src/image/style.scss
@@ -58,4 +58,9 @@
 		margin-left: auto;
 		margin-right: auto;
 	}
+
+	// Rounded corners block style
+	&.is-style-rounded-corners img {
+		border-radius: $grid-size;
+	}
 }