How to remove action buttons like "Complete" for specific user roles

have you found a solution?

I need to remove the “Complete” Button.

Is there a hook for it?

There is no hook/capability for this action. If you can edit orders, you can change statuses (in many places).

This worked for me:

// Remove Order Actions button
if ( class_exists( 'woocommerce' ) ) {
	add_filter('woocommerce_admin_order_actions','woo_disable_complete_action');
	function woo_disable_complete_action( $actions ){
	    unset($actions['complete']);
	    return $actions;
	}
}

And in case user role editor is installed:

// Remove Order Actions button
if ( class_exists( 'woocommerce' ) && class_exists( 'User_Role_Editor' )) {
	add_filter('woocommerce_admin_order_actions','woo_disable_complete_action');
	function woo_disable_complete_action( $actions ){
		if( !current_user_can('mark_order_complete') ) {
		    unset($actions['complete']);
		}
	    return $actions;
	}
}

They can still view the order and change status there.

yes, but I only wanted to remove that button, so no one accidentally clicks it.
Thanks!