The 1975 Virginia Slims of Boston, also known that year as the US Indoor Championships, was a women's tennis tournament played on indoor carpet courts at the Boston University Walter Brown Arena in Boston, Massachusetts in the United States that was part of the 1975 Virginia Slims World Championship Series. The tournament was held from March 3 through March 8, 1975.[1] Martina Navratilova won the singles title and earned $15,000 first-prize money.[2] [3]
Martina Navratilova defeated 
Evonne Goolagong 6–2, 4–6, 6–3
Rosie Casals / Billie Jean King defeated Chris Evert / Martina Navratilova 6–3, 6–4
| Event | W | F | 3rd | 4th | QF | Round of 16 | Round of 32 | ||
| style=background:#efefef | Singles | $15,000 | $8,500 | $4,600 | $3,800 | $2,100 | $1,100 | $550 |
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