Lottia antillarum is a species of limpet or sea snail in the family Lottiidae. It is commonly known as the Antilles limpet.
This marine species occurs in the Gulf of Mexico, in the Caribbean Sea, and off the Lesser Antilles.
Like other members of the order Patellogastropoda, Lottia antillarum is typically a broadcast spawner. Its life cycle progresses from embryos to planktonic trochophore larvae, then to juvenile veligers, and finally to adults.
The species was first described by George Brettingham Sowerby I in 1834. Its conservation status has not yet been assessed by the IUCN Red List.