Punan language can refer to several Austronesian languages of Borneo:
Punan languages, closely related languages spoken by the Punan people Penan-Nibong language, a language complex spoken by the Penan people Punan Kelai language, part of the Segai–Modang subgroup of Kayanic Melanau–Kajang languages, also referred to as Müller-Schwaner 'Punan' Siang language, a Barito language spoken in upstream Barito River, whose speakers are sometimes referred to as 'Punan' by people downstream