Gaius Lutatius Catulus (242–241 BC) was a Roman statesman and naval commander in the First Punic War.
Catulus may also refer to:
People Quintus Lutatius Catulus (consul 102 BC) (149–87 BC), consul of the Roman Republic in 102 BC Quintus Lutatius Catulus Capitolinus (c. 121–61 BC), politician in the late Roman Republic
Animals Elysia catulus, a species of sea slug in the family Plakobranchidae Gracilentulus catulus, a species of proturan in the family Acerentomidae Megachile catulus, a species of bee in the family Megachilidae Stichopogon catulus, a species of robber flies in the family Asilidae Temnosternus catulus, a species of beetle in the family Cerambycidae
Other uses Catulus (fungus), a genus of fungus in the class Dothideomycetes