1978 U.S. Pro Tennis Championships
| 1978 US Pro Championships | |
|---|---|
| Date | August 21 – 28 |
| Edition | 51st |
| Category | Grand Prix |
| Draw | 64S/32D |
| Prize money | $200,000 |
| Surface | Clay / outdoor |
| Location | Boston, USA |
| Venue | Longwood Cricket Club |
| Champions | |
| Singles | |
| 23x15px Manuel Orantes [1] | |
| Doubles | |
 Balázs Taróczy /  Víctor Pecci [2] |
|
The 1978 U.S. Pro Tennis Championships was a men's tennis tournament played on outdoor green clay courts (Har-Tru) at the Longwood Cricket Club in Boston, USA. The event was part of the 1978 Grand Prix circuit. It was the 51st edition of the tournament and was held from August 21 through August 28, 1978. Despite pressure to switch to a hard court surface from the Association of Tennis Professionals (ATP) and some leading players, in line with the surface change made that year by the US Open which directly followed the Boston event, the tournament organization elected to remain a clay court tournament in 1978. Several top players including Björn Borg, Guillermo Vilas and Jimmy Connors elected not to play the tournament. Fourth-seeded and defending champion Manuel Orantes won the singles title and the accompanying $32,000 first-prize money.[3] The final was delayed until Tuesday, August 29 due to rain.[4]
Champions
Singles
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23x15px Manuel Orantes defeated 
Harold Solomon 6–4, 6–3
Doubles
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Balázs Taróczy / Víctor Pecci defeated 
Heinz Günthardt / Van Winitsky 6–3, 3–6, 6–1
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