Gonocephalus bellii, commonly known as Bell's anglehead lizard or Bell's forest dragon, is a species of lizard in the family Agamidae.

The specific name, bellii, is in honor of English zoologist Thomas Bell.

[3] G. bellii is indigenous to Thailand, Malacca, Perak, Pahang, Selangor, Indonesia (Borneo), and West Malaysia.

[2] The preferred natural habitat of G. bellii is forest, at altitudes of 1,000–1,800 m (3,300–5,900 ft).

Males have a colorful dewlap that ranges from teal to pinkish-purple.