Rennellia is a genus of flowering plants belonging to the family Rubiaceae.

[1] Its native range is Indo-China to western Malesia.

It is found in Borneo, Malaya, Myanmar, the Nicobar Islands, Sumatera and Thailand.

[1] The genus name of Rennellia is in honour of James Rennell (1742–1830), an English geographer, historian and a pioneer of oceanography.

Vol.2 (Issue 2) on page 255 in 1851.