Executive Order No. 464 (popularly known as E.O. 464) is a controversial executive order issued in the Philippines on September 26, 2005, by President Gloria Macapagal Arroyo that prevents cabinet members, police and military generals, senior national security officials, and "such other officers as may be determined by the President" to attend congressional hearings unless the President gives permission to those who will attend the said proceedings. Arroyo revoked the order on March 5, 2008.