Ace O'Hara was a British science-fiction comic strip originally published in the Daily Dispatch newspaper. The character later appeared in the Melbourne Age newspaper from November 8, 1954 to August 3, 1964, as a long-running feature published by Mercury Features. The strip was written by Conrad Frost and illustrated by Basil Blackaller until his death in 1958, after which Tony Speer took over as the illustrator.