Agathia laetata is a species of moth of the family Geometridae which was first described by Johan Christian Fabricius in 1794.

It is found in India, Indochina, southern China, Taiwan and Sundaland.

The green spots towards inner margin of the hindwings are rarely developed.

The larvae feed on Ichnocarpus, Nerium and Marsdenia species.

Eggs are shining light green, oval, flat topped or concave.