Yahadian is a Papuan language of the Bird's Head Peninsula of Southwest Papua.

It is spoken in Yahadian village, Kais District, South Sorong Regency.

[1] Yahadian is closest to Konda, with which it is 60% similar lexically.

De Vries (2004:147) reports the following pronouns for Yahadian.

This article about Trans–New Guinea languages is a stub.