The 1980 Avon Championships of Houston was a women's tennis tournament played on indoor carpet courts at the Summit in Houston, Texas in the United States that was part of the 1980 Avon Championships Circuit. It was the 10th edition of the tournament and was held from February 25 through March 2, 1980.[1] Third-seeded Billie Jean King won the singles title and earned $30,000 first-prize money.[2]
Billie Jean King defeated Martina Navratilova 6–1, 6–3
Billie Jean King / Ilana Kloss defeated Betty Stöve / 
Wendy Turnbull 3–6, 6–1, 6–4
| Event | W | F | 3rd | 4th | QF | Round of 16 | Round of 32 | ||
| style=background:#efefef | Singles | $30,000 | $15,000 | $7,500 | $7,200 | $3,500 | $1,750 | $700 |
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