Beisiegel is a German surname. Notable people with the surname include:
Isabelle Beisiegel (born 1979), Canadian golfer Ludwig Beisiegel (1912–1999), German field hockey player Mary Beisiegel (born ~1972), American mathematics educator Ulrike Beisiegel (born 1952), German biochemist Walter Beisiegel (1907–1973), English Royal Air Force officer and cricketer