BSFS may refer to:
Bill Snyder Family Stadium, the football stadium of Kansas State University Bachelor of Science in Foreign Service, an undergraduate degree offered by Georgetown University's Walsh School of Foreign Service Baltimore Science Fiction Society, a literary organization in Baltimore, Maryland, United States Bristol stool scale, also known as the Bristol Stool Form Scale, which helps communication about stools in health care British-Soviet Friendship Society, a former organization in Britain (1946–1991)