Onhan is a regional Western Bisayan language spoken, along with the Romblomanon and Asi languages, in the province of Romblon, Philippines.

Specifically, Onhan is spoken on the following islands within Romblon: As a variant of the Kinaray-a language, some speakers are found on the island of Boracay in Aklan province as well as parts of the island of Panay, specifically in the following municipalities: Malay, Nabas and Buruanga.

In the provinces of Oriental and Occidental Mindoro, migrant Onhan speakers from Tablas Island brought the language to the following municipalities: San Jose, Magsaysay, Bulalacao, Mansalay, Roxas, and some parts of Bongabong.

The New Testament was translated into Bisaya-Inunhan by Eldon Leano Talamisan and published in 1999.

The Harrow (Ang Singkaw), an official publication of Romblon State University, publishes Inunhan poems, stories and other genres of literature.