| Country (sports) |  United States |
|---|---|
| Residence | Seattle, Washington, United States |
| Born | September 25, 1949 Berkeley, California, United States |
| Height | 6 ft 4 in (1.93 m) |
| Turned pro | 1968 (amateur tour from 1967) |
| Retired | 1986 |
| Plays | Right-handed (1-handed backhand) |
| Singles | |
| Career record | 276–291 |
| Career titles | 5 |
| Highest ranking | No. 20 (August 30, 1977) |
| Grand Slam singles results | |
| Australian Open | 4R (1982) |
| French Open | 3R (1978) |
| Wimbledon | 4R (1971, 1981) |
| US Open | 3R (1968) |
| Doubles | |
| Career record | 146–211 |
| Career titles | 3 |
| Grand Slam doubles results | |
| French Open | 3R (1977, 1978) |
| Wimbledon | 3R (1974, 1976, 1977) |
| US Open | QF (1971) |
Jeff Borowiak (born September 25, 1949) is a former professional tennis player from the United States, who won five singles and three doubles titles during his professional career, reaching a career-high ATP singles ranking of World No. 20 in August 1977.