Amapasaurus is a genus of the spectacled lizard family Gymnophthalmidae from Amapá state in northern Brazil. It contains a single species, Amapasaurus tetradactylus (four-toed amapasaurus). It is similar to Leposoma, but it has four instead of five fingers. Not much is known about the species but it may be threatened by deforestation and mining although the exact impact is unknown.