3,400 (2007 SIL).
Sarawak: Kapit division, Balui and upper Baram rivers, Mount Dulit area, 3 villages; Nibong branch of Lobong river.
Nibong, Bok Penan (Bok), Penan Silat, Penan Gang (Gang), Penan Lusong (Lusong), Penan Apo, Sipeng (Speng), Penan Lanying, Jelalong Penan. Not closely related to other languages.
Latin script [Latn].
Traditionalists are nomadic and seminomadic.