Belin (Hungarian: Bölön, Hungarian pronunciation: [bøløn]) is a commune in Covasna County, Transylvania, Romania composed of two villages: Belin and Belin-Vale (Bölönpatak).

Belin has a relative Roma majority.

At the 2021 census, it had a population of 3,181; of those, 38.98% were Roma, 29.27% Romanians, and 27.32% Székely Hungarians.

[3] At the 2011 census, there were 2,859 inhabitants; 46.9% of those were Roma, 36.7% Hungarians, and 13.7% Romanians.

In 2002, 33.4% of inhabitants were Pentecostal, 30.2% Unitarian, 19.8% Romanian Orthodox, 9.7% Reformed, 3.1% belonged to another religion, 1.3% had no religion, and 1.1% were Roman Catholic.