Biryuk (; , Büürük) is a rural locality (a selo), one of four settlements, in addition to Neryuktyayinsk 1-y, Kudu-Byas and Tas-Anna, in Neryuktyayinsky 1-y Rural Okrug of Olyokminsky District in the Sakha Republic, Russia. It is located from Olyokminsk, the administrative center of the district and from Neryuktyayinsk 1-y. Its population as of the 2002 Census was 10.