Index: src/wp-login.php
===================================================================
--- src/wp-login.php	(revision 27810)
+++ src/wp-login.php	(working copy)
@@ -472,9 +472,22 @@
 
 case 'logout' :
 	check_admin_referer('log-out');
+
+	$user = wp_get_current_user();
+
 	wp_logout();
 
 	$redirect_to = !empty( $_REQUEST['redirect_to'] ) ? $_REQUEST['redirect_to'] : 'wp-login.php?loggedout=true';
+
+	/**
+	 * Filter the log out redirect URL.
+	 *
+	 * @since x.x.x
+	 *
+	 * @param string  $redirect_to The redirect destination URL.
+	 * @param WP_User $user        The WP_User object for the user that's logging out.
+	 */
+	$redirect_to = apply_filters( 'logout_redirect', $redirect_to, $user );
 	wp_safe_redirect( $redirect_to );
 	exit();