| Ruth Cardoso | |
| Birth Name: | Ruth Volkl |
| Birth Date: | 9 February 1934 |
| Birth Place: | Belmonte, Brazil |
| Occupation: | Chess player |
| Woman International Master | |
Ruth Cardoso (born Ruth Volkl; February 9, 1934 - February 11, 2000) was a Brazilian chess player born in Belmonte. She was awarded the title Woman International Master by the International Chess Federation in 1970. In 1971, she participated in Women's Chess Interzonal Tournament.[1]