Order 66

Order 66 may refer to:


 * Order 66 (Star Wars), a fictional prearranged military command given by Darth Sidious during the movie Star Wars Episode III: Revenge of the Sith
 * Star Wars Republic Commando: Order 66, the fourth novel in the Republic Commando series, written by Karen Traviss
 * Order 66/2523, a 1980 anti-communist directive of the Thai government
 * Standing Order 66, a 1713 British Parliamentary procedure