Pro Tennis Championships was a men's tennis tournament played on outdoor hard courts at the Longwood Cricket Club in Chestnut Hill, Massachusetts in the United States and was part of the 1971 World Championship Tennis circuit.

Sixth-seeded Ken Rosewall won the singles title, his third U.S.

Pro title, and the accompanying $10,000 first-prize money.

[a] The final was watched by 5,500 spectators.

[4][3] Ken Rosewall defeated Cliff Drysdale 6–4, 6–3, 6–0 Roy Emerson / Rod Laver defeated Tom Okker / Marty Riessen 6–4, 6–4