The 1972 World Championship Tennis circuit was one of the two rival professional male tennis circuits of 1972. It was organized by World Championship Tennis (WCT). The circuit included twenty-three regular events, and two circuit finals, one taking place in May, counting for the second half of the 1971 season, and the first part of the 1972 season, and a smaller one taking place in November, counting for the second half of the 1972 season.