1977 WTA Tour
The 1977 WTA Tour consisted of a number of tennis tournaments for female tennis players. It was composed of the newly streamlined version of the Virginia Slims Circuit and the Colgate Series. The year 1977 also saw the creation of the first official ranking system and these rankings were used to determine acceptance into the tournaments.
Schedule
This is a calendar of all events which were part of either the Virginia Slims circuit or the Colgate International Series in the year 1977, with player progression documented from the quarterfinals stage. Also included are the Grand Slam tournaments, the 1977 Virginia Slims Championships, the 1977 Federation Cup and a number of events not affiliated with either tour.;Key
| Grand Slam tournaments |
| Virginia Slims/Colgate Series championships |
| Virginia Slims Circuit |
| Colgate International Series |
| Non-Tour Events |
| Team events |
November (1976)
December (1976)
January
February
March
April
May
June
July
| Week | Tournament | Champions | Runners-up | Semifinalists | Quarterfinalists |
| 4 Jul | Swiss Open Gstaad, Switzerland Non-tour event Clay Singles – Doubles |  Lesley Hunt4–6, 7–5, 6–1 | Helen Gourlay Cawley | ||
| 4 Jul | Swiss Open Gstaad, Switzerland Non-tour event Clay Singles – Doubles | Helen Gourlay Cawley Rayni Fox6–0, 6–4 | Mary Carillo Lesley Hunt | ||
| 4 Jul | Swedish Open Båstad, Sweden Non-tour event Clay Singles – Doubles |  Florența Mihai6–4, 6–4 | Mary Struthers | ||
| 4 Jul | Swedish Open Båstad, Sweden Non-tour event Clay Singles – Doubles | Cynthia Doerner Raquel Giscafré6–2, 7–5 |  Helena Anliot Florența Mihai | ||
| 11 Jul | Colgate Trophy Kitzbühel, Austria Non-tour event Clay Singles – Doubles |  Renáta Tomanová6–3, 7–5 |  Katja Ebbinghaus | ||
| 11 Jul | Colgate Trophy Kitzbühel, Austria Non-tour event Clay Singles – Doubles | Helen Gourlay Cawley Rayni Fox 6–1, 6–4 |  Lesley Charles Jackie Fayter |