Lialis is a genus of lizards in the family Pygopodidae. The genus is endemic to Australia and New Guinea. Lizards in the genus Lialis specialize in eating skinks, and have hinged teeth and highly kinetic skulls that allow them to swallow their slippery prey whole. Lizards in the genus Lialis exhibit oviparity and typically lay two eggs per clutch. The following two species are recognized as being valid.