Latin obscenity is the profane, indecent, or impolite vocabulary of Latin, and its uses. Words deemed obscene were described as obsc(a)ena (obscene, lewd, unfit for public use), or improba (improper, in poor taste, undignified). Documented obscenities occurred rarely in classical Latin literature, limited to certain types of writing such as epigrams, but they are commonly used in the graffiti written on the walls of Pompeii and Herculaneum.

Among the documents of interest in this area is a letter written by Cicero in 45 BC (ad Fam. 9.22) to a friend called Paetus, in which he alludes to a number of obscene words without actually naming them.

Apart from graffiti, the writers who used obscene words most were Catullus and Martial in their shorter poems. Another source is the anonymous Priapeia (see External links below), a collection of 95 epigrams supposedly written to adorn statues of the fertility god Priapus, whose wooden image was customarily set up to protect orchards against thieves. The earlier poems of Horace also contained some obscenities. However, the satirists Persius and Juvenal, although often describing obscene acts, did so without mentioning the obscene words.

Medical, especially veterinary, texts also use certain anatomical words that, outside of their technical context, might have been considered obscene.