Mona May Karff
| Personal information | |
|---|---|
| Born | October 20, 1908 Sokyriany, Bessarabia, Russia |
| Died | January 10, 1998 (aged 89) Manhattan, New York, United States |
| Chess career | |
| Country | United States |
| Title | Woman International Master (1950) |
| Peak rating | 2135 (January 1990) |
Mona May Karff (née Minna Ratner; 20 October 1908 – 10 January 1998) was an American chess player. She dominated U.S. women's chess in the 1940s and early 1950s: she held seven U.S. Women's Chess Champion titles and four consecutive U.S. Open titles.