Obispeño (also known as tiłhini) is one of the extinct Chumash Native American languages previously spoken along the coastal areas of California.

The primary source of documentation on the language is from the work of linguist J. P.

[4] Obispeño is classified as the sole member of the northern branch of the Chumashan language family.

[5] Obispeño was spoken in the region of San Luis Obispo, California.

[6] This article related to the Indigenous languages of the Americas is a stub.