Frank Leslie (1821–1880) was an English-born American engraver, illustrator, and publisher.

Frank Leslie may also refer to: Frank Matthews Leslie (1935–2000), professor and mathematical physicist Buckskin Frank Leslie (1842–1930), U.S. Army scout, gambler, miner, and gunfighter Frank Leslie (Medal of Honor) (1841–1882), Medal of Honor recipient Miriam Leslie (1836–1914), wife of Frank Leslie who legally changed her name to Frank after his death