| Country (sports) |  United States |
|---|---|
| Residence | Honolulu, Hawaii, U.S. |
| Born | June 3, 1967 Mountain View, California, U.S. |
| Height | 1.83 m (6 ft 0 in) |
| Turned pro | 1988 |
| Retired | 2001 |
| Plays | Right-handed |
| Prize money | $749,587 |
| Singles | |
| Career record | 4–8 |
| Career titles | 0 |
| Highest ranking | No. 167 (July 22, 1991) |
| Grand Slam singles results | |
| Australian Open | 2R (1993) |
| Wimbledon | 1R (1991, 1993) |
| Doubles | |
| Career record | 157–205 |
| Career titles | 5 |
| Highest ranking | No. 32 (October 2, 1995) |
| Grand Slam doubles results | |
| Australian Open | 3R (1992, 1996) |
| Wimbledon | 2R (1993, 1994, 1996) |
| US Open | 3R (1994, 1996) |
| Grand Slam mixed doubles results | |
| Australian Open | 2R (1996) |
| Wimbledon | 3R (1996) |
Mark Keil (born June 3, 1967) is a former professional tennis player from the United States who won five ATP Tour doubles tournaments and was runner up at eight more.