The family iguanidae includes American arboreal lizards, chuckwallas, iguanas.
- Subfamily Corytophaninae – helmet lizards
- Subfamily Crotaphytinae – collared lizards, leopard lizards
- Subfamily Hoplocercinae – dwarf and spinytail iguanas
- Subfamily Iguaninae – marine, Fijian, Galapagos land, spinytail, rock, desert, green, and chuckwalla iguanas
- Subfamily Oplurinae – Malagasy iguanas
- Subfamily Phrynosomatinae – North American spiny lizards
- Subfamily Polychrotinae – anoles and kin
- Subfamily Tropidurinae – tropidurine lizards
