The following are lists of world number 1 ranked players in tennis:
Men World number 1 ranked male tennis players, all-time singles rankings List of ATP number 1 ranked singles tennis players, since 1973 List of ATP number 1 ranked doubles tennis players, since 1976 Women World number 1 ranked female tennis players, all-time singles rankings List of WTA number 1 ranked singles tennis players, since 1975 List of WTA number 1 ranked doubles tennis players, since 1984
See also Top ten ranked male tennis players Top ten ranked male tennis players (1912–1972) Top ten ranked female tennis players Top ten ranked female tennis players (1921–1974)