Labrisomus xanti, the Largemouth blenny, is a species of labrisomid blenny native to the Pacific coast of Mexico from Baja California to Jalisco.

It inhabits shallow waters.

This species can reach a length of 17.8 centimetres (7.0 in) TL.

[2] The specific name honours the collector of the type, the Hungarian zoologist John Xantus (1825-1894).

This Labrisomidae article is a stub.