Leptolejeunea is a genus of liverwort in family Lejeuneaceae.

It has a cosmopolitan distribution mainly in the Southern Hemisphere.

The genus name of Leptolejeunea is derived from lepton from the Greek λεπτός (meaning "small") and also Lejeunea which is in honour of Alexandre Louis Simon Lejeune (1779–1858), who was a Belgian physician and botanist. Lejeunea was the original genus of this type of liverworts published in 1820.

...