Fannie Sellins (1872 – August 26, 1919) was an American union organizer. Born Fanny Mooney in New Orleans, Louisiana, she married Charles Sellins in St. Louis, Missouri. After his death she worked in a garment factory to support her four children. She helped to organize Local # 67 of the International Ladies' Garment Workers' Union in St. Louis, where she became a negotiator for 400 women locked out of a garment factory. Thus she came to the attention of Van Bittner, president of District 5 of the United Mine Workers of America (UMWA).