List of male singles tennis players

This is a list of top international male singles tennis players, both past and present.

It includes players who have been officially ranked among the top 25 singles players in the world during the "Open Era"; been ranked in the top 10 prior to the Open Era; have been a singles quarterfinalist or better at a Grand Slam tournament; have reached the finals of or won the season-ending event; or have been singles medalists at the Olympics.

Players who have won more than one Grand Slam singles title or have been ranked world no. 1 in singles have been put in bold font. Players who are still active on the tour have been put in italics.