Bibaj (, ) is a village in the municipality of Mavrovo and Rostuà ¡a, North Macedonia.
In statistics gathered by Vasil Kanchov in 1900, the village of Bibaj was inhabited by 32 Christian Albanians and 90 Muslim Albanians.
According to the 2002 census, the village had a total of 31 inhabitants. Ethnic groups in the village include:
As of the 2021 census, Bibaj had zero residents.