Chief O'Hara or Chief Ohara may refer to a number of fictional characters, all of which are chiefs of police:
Chief O'Hara (Disney Comics), a character in Mickey Mouse stories Chief Daijiro Ohara, a character in the manga KochiKame: Tokyo Beat Cops Batman Chief Miles O'Hara, who appeared in the 1966-1968 Batman television series Chief Clancy O'Hara, the first victim of the Hangman killer in the Batman: Dark Victory comic book series