Not to be confused with Romans named "Catulus", see Catulus.

Gaius Valerius Catullus (/kəˈtʌləs/; c. 84 – 54 BC) was a Latin poet of the late Roman Republic who wrote in the neoteric style of poetry. His surviving works are still read widely, and continue to influence poetry and other forms of art.

Catullus' poems were widely appreciated by other poets. He greatly influenced poets such as Ovid, Horace, and Virgil. After his rediscovery in the late Middle Ages, Catullus again found admirers. His explicit writing style has shocked many readers. Indeed, Catullus' work was never canonical in schools, although his body of work is still frequently read from secondary school to graduate programs across the world.