Albert Zweifel (born 7 June 1949) is a Swiss former professional cyclo-cross cyclist. Zweifel competed as a professional from 1973 to 1989, winning the UCI Cyclo-cross World Championships five times (1976, 1977, 1978, 1979, 1986).[1] He was also the Swiss National Cyclo-cross Champion nine times. Zweifel dominated cyclo-cross in Switzerland in the 1970s as well as winning big international cyclo-cross races such as Aigle and Igorre.[2]