Trevor Geoffrey Bull (28 December 1944 – 4 April 2009) was a British cyclist.
He competed in the team pursuit at the 1964 Summer Olympics.
He also represented the England team and won a bronze medal in the 10 mile scratch race, at the 1966 British Empire and Commonwealth Games in Kingston, Jamaica.
Bull was a four times British track champion, winning the British National Individual Sprint Championships in 1975, two Madison titles (1969 & 1970) with Tony Gowland and a team pursuit title (1965).