Ally Sloper's Half Holiday was a British comics magazine, first published on 3 May 1884. It is regarded to be the first comic strip magazine to feature a recurring character. Star Ally Sloper, a blustery, lazy schemer often found "sloping" through alleys to avoid his landlord and other creditors, had debuted in 1867 in the satirical magazine Judy — created by writer and fledgling artist Charles Henry Ross and inked and later fully illustrated by his French wife Emilie de Tessier under the pseudonym "Marie Duval" (or "Marie DuVal"; sources differ).

The "half holiday" referred to in the title was the practice in Victorian Britain of allowing the workers home at lunchtime on a Saturday, a practice that also established the kick-off times of football matches.