Sarnaghbyur (Armenian: Սառնաղբյուր) is a village in the Ani Municipality of the Shirak Province of Armenia.

There are numerous evidences on the hill called Kalachi or Ghalachi, but no archaeological studies have been conducted so far.

The population is engaged in cattle breeding, cultivation of grain and fodder crops.

In the center of the village are the churches of St. Tadevos (1883), St. Jacob (V-VI centuries) and St. Karapet ( 1205 ).

Near the village are the Vogheni Monastery of the X-XIII centuries, St. Gregory the Illuminator pilgrimage site, and 6 km east - St. Lazar Church (V-VI centuries), "Gndakar" (1st millennium BC) and "Berdik" ( 2nd-1st millennium BCE) castles.