Bellaire is a village in Belmont County, Ohio, United States, along the Ohio River. The population was 3,870 at the 2020 census, having peaked in 1920. It is part of the Wheeling metropolitan area. The Bellaire Bridge was filmed in the 1991 motion picture The Silence of the Lambs. The curved railroad viaduct and bridge over the Ohio, the B& O Railroad Viaduct, were featured in the 2010 film Unstoppable and is a registered historic structure.