Agatea is a genus of flowering plants in the violet family Violaceae, with seven accepted species, found in New Guinea and New Caledonia.

The flowers are in terminal pseudo-racemes or racemoids, with white corollas that are strongly zygomorphic (bilaterally symmetrical) with the very large bottom petal differentiated into a claw and blade and saccate (pouch like) at the base.

[9] Early taxonomic schemes such as Bentham and Hooker (1862)[10] placed Agatea within subfamily Violoideae, tribe Violeae, subtribe Violinae.

[13] In earlier classifications primarily based on floral morphology these were distributed among separate subtribes, but molecular phylogenetic studies has now grouped them together into a single lianescent clade, one of four within the family.

[12] Agatea are native to New Guinea and some nearby South Pacific islands including New Caledonia, and are found in monsoon forests.