Leucas is a genus of plants in the family Lamiaceae, first described by Robert Brown in 1810. It contains over 200 species, widespread over much of Africa, and southern and eastern Asia (Iran, India, China, Japan, Indonesia, etc.) with a few species in Queensland and on various islands in the Indian Ocean.

Species

The Plant List recognises 133 accepted species (including infraspecific names): A new species, Leucas sahyadriensis Sunojk., has recently been described and is endemic to the Western Ghats of southern India.