List of male tennis players

To keep it at a reasonable length, the following is (only) a list of male tennis players from over the years who in singles have been ranked in the top 25 in the 'open era', in the top few prior to the open era, quarter-finalists or better in a Grand Slam tournament, or medalists at the Olympic Games, or who in doubles have won a Grand Slam or Olympic tournament or been ranked No 1.

K

• Yevgeny Kafelnikov (1974-) - (Russia) - 1996 French Open champion; 1999 Australian Open champion; 1999 and 2001 U.S. Open semi-finalist; 1995 Wimbledon quater-finalist; ranked World No. 1
• Bernd Karbacher (1968-) - (Germany)
• Nicolas Kiefer (1977-) - (Germany) - 1998 and 2000 Australian Open quater-finalist; 1997 Wimbledon quater-finalist (first appearence); 2000 U.S. Open quater-finalist
• Billy Knight (1935-) - (Britain)
• Mark Knowles - (Bahamas) - doubles specialist
• Thomaz Koch (1945-) (Brazil) - 1969 French Open quarter-finalist; 1974 World No. 24
• Jan Kodes (1946-) - (Czechoslovakia)
• Petr Korda (1968-) - (Czech Republic) - 1998 Australian Open champion
• Stefan Koubek (1977-) (Austria) - 2002 Australian Open quater-finalist; World singles No. 20 in 2000
• Jan Ko?eluh (1904-) - (Czechoslovakia) - (not to be confused with Karel Ko?eluh)
• Karel Ko?eluh (1895-1950) - (Czechoslovakia) - (not to be confused with Jan Ko?eluh)
• Richard Krajicek (1971-) - (Netherlands) - 1996 Wimbledon champion
• Jack Kramer (1921-) - (U.S.)
• Aaron Krickstein - (U.S.)
• Johan Kriek - (South Africa/U.S.)
• Ramanathan Krishnan - (India)
• Ramesh Krishnan - (India)
• Paul Kronk (1954) - (Australia) - 1978 Australian Open quarter-finalist
• Gustavo Kuerten (1976-) - (Brazil) - 1997, 2000 and 2001 French Open champion; 1999 Wimbledon quater-finalist; 1999 and 2001 U.S. Open quater-finalist; ranked World No. 1
• Karol Kucera (1974-) - (Czechoslovakia/Slovakia) - 1998 Australian Open semi-finalist; 1998 U.S. Open quater-finalist
• Nicklas Kulti (1971-) - (Sweden) - 1992 French Open quarter-finalist