The 1971 Virginia Slims National Indoors, officially named the Virginia Slims National Women's Indoor Tennis Championships and also known as the Virginia Slims of Boston, was a women's tennis tournament played on indoor carpet courts at the Winchester Indoor Tennis Center in Winchester, Massachusetts in the United States that was part of the 1971 Virginia Slims World Championship Series. It was the 64th edition of the tournament and was held from February 26 through March 1, 1971.[1] First-seeded Billie Jean King won her fourth singles title at the event after 1966–1968, following a win in the final against Rosie Casals and earned $2,500 first-prize money.[2] [3] [4] [5]
Billie Jean King defeated Rosie Casals 4–6, 6–2, 6–3
Rosie Casals / Billie Jean King defeated 
Françoise Dürr / 
Ann Jones 6–4, 7–5
| Event | W | F | 3rd | 4th | QF | Round of 16 | ||
| style=background:#f3f3f3 | Singles | $2,500 | $1,800 | $1,200 | $1,000 | $600 | $300 |
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