| 1981 Toray Sillook Open | |
|---|---|
| Date | 14–20 September |
| Edition | 9th |
| Category | Toyota Series (Category 3) |
| Draw | 32S |
| Prize money | $150,000 |
| Surface | Carpet / indoor |
| Location | Tokyo, Japan |
| Venue | Yoyogi National Gymnasium |
| Champions | |
| Singles | |
 Ann Kiyomura | |
The 1981 Toray Sillook Open was a women's singles tennis tournament played on indoor carpet courts at Yoyogi National Gymnasium in Tokyo in Japan. The event was part of the Category 3 of the 1981 Toyota Series. It was the ninth edition of the tournament and was held from 14 September through 20 September 1981. Unseeded Ann Kiyomura won the title and earned $34,000 first-prize money.
