diff --git a/lib/experimental/editor-settings.php b/lib/experimental/editor-settings.php
index 919be2e6e34a45..9e9f145c678400 100644
--- a/lib/experimental/editor-settings.php
+++ b/lib/experimental/editor-settings.php
@@ -28,6 +28,9 @@ function gutenberg_enable_experiments() {
 	if ( gutenberg_is_experiment_enabled( 'gutenberg-full-page-client-side-navigation' ) ) {
 		wp_add_inline_script( 'wp-block-library', 'window.__experimentalFullPageClientSideNavigation = true', 'before' );
 	}
+	if ( $gutenberg_experiments && array_key_exists( 'gutenberg-block-comment', $gutenberg_experiments ) ) {
+		wp_add_inline_script( 'wp-block-editor', 'window.__experimentalEnableBlockComment = true', 'before' );
+	}
 	if ( $gutenberg_experiments && array_key_exists( 'gutenberg-quick-edit-dataviews', $gutenberg_experiments ) ) {
 		wp_add_inline_script( 'wp-block-editor', 'window.__experimentalQuickEditDataViews = true', 'before' );
 	}
diff --git a/lib/experiments-page.php b/lib/experiments-page.php
index 5acd5f0f192364..094e009d9ca7ec 100644
--- a/lib/experiments-page.php
+++ b/lib/experiments-page.php
@@ -163,6 +163,18 @@ function gutenberg_initialize_experiments_settings() {
 		)
 	);
 
+	add_settings_field(
+		'gutenberg-block-comment',
+		__( 'Block Comments', 'gutenberg' ),
+		'gutenberg_display_experiment_field',
+		'gutenberg-experiments',
+		'gutenberg_experiments_section',
+		array(
+			'label' => __( 'Enable multi-user commenting on blocks in post editor', 'gutenberg' ),
+			'id'    => 'gutenberg-block-comment',
+		)
+	);
+
 	add_settings_field(
 		'gutenberg-media-processing',
 		__( 'Client-side media processing', 'gutenberg' ),