Tropidurus is a genus of reptiles. The genus includes many species of Neotropical ground lizards. Tropidurus is the type genus of the family Tropiduridae.

Microlophus is a genus of tropidurid lizards native to South America. Around 20 species are recognized and 10 of these are endemic to the Galápagos Islands, where they are commonly known as lava lizards. The remaining, which often are called Pacific iguanas, are found in the Andes and along the Pacific coasts of Chile, Peru, and Ecuador.