| Country (sports) |  Germany |
|---|---|
| Residence | Blieskastel, Germany |
| Born | 16 February 1972 Sankt Ingbert, West Germany |
| Height | 1.85 m (6 ft 1 in) |
| Turned pro | 1990 |
| Plays | Right-handed |
| Prize money | $388,546 |
| Singles | |
| Career record | 6–18 |
| Career titles | 0 5 Challenger, 0 Futures |
| Highest ranking | No. 118 (22 April 1996) |
| Grand Slam singles results | |
| Australian Open | Q2 (1989, 1999) |
| French Open | 1R (1996) |
| Wimbledon | 1R (1990) |
| US Open | 2R (1996) |
| Doubles | |
| Career record | 3–12 |
| Career titles | 0 6 Challenger, 0 Futures |
| Highest ranking | No. 158 (17 April 2000) |
| Grand Slam doubles results | |
| Wimbledon | Q1 (1990, 1993) |
Dirk Dier (born 16 February 1972) is a former professional tennis player from Germany.