1971 Queen's Club Championships

The 1971 Queen's Club Championships, also known as the Rothmans London Grass Court Championships, was a combined men's and women's tennis tournament played on grass courts at the Queen's Club in London in the United Kingdom that was part of the 1971 Pepsi-Cola Grand Prix. It was the 72nd edition of the tournament and was held from 14 June until 19 June 1971. Stan Smith and Margaret Court won the singles titles.

Men's singles
🇺🇸 Stan Smith defeated 🇦🇺 John Newcombe 8–6, 6–3
 * It was Smith's 3rd title of the year and the 12th of his career.

Women's singles
🇦🇺 Margaret Court defeated 🇺🇸 Billie Jean King 6–3, 3–6, 6–3

Men's doubles
Tom Okker / 🇺🇸 Marty Riessen defeated 🇺🇸 Stan Smith / 🇺🇸 Erik van Dillen 8–6, 4–6, 10–8
 * It was Okker's 3rd title of the year and the 16th of his career. It was Riessen's 5th title of the year and the 14th of his career.

Women's doubles
🇺🇸 Rosie Casals / 🇺🇸 Billie Jean King defeated 🇺🇸 Mary–Ann Curtis / 🇺🇸 Valerie Ziegenfuss 6–2, 8–6