Belle Louise Adair was an American actress who was active in Hollywood during the silent era. She also performed on stage and in vaudeville.
Adair was born in San Jose, California, but moved from there at age 4. She was educated at Immaculate Heart convent in Locust Gap, Pennsylvania, and moved to New York City to study at Brooklyn Teachers Training College.
Two days after she left Immaculate Heart, she debuted in an amateur performance on a U. S. Naval Reserve boat on which her brother served. Her vaudeville debut came at Poli's Theatre in Hartford, Connecticut. In 1912, she performed as a singing comedienne at the Orpheum Theatre in Harrisburg, Pennsylvania.
While in New York she appeared in several films before marrying Ewald F. Buchal of Passaic, New Jersey. She died in 1926 after a period of poor health.