| Office: | Minister for Finance |
| Primeminister: | Erik Gustaf Boström |
| Term Start: | 15 March 1895 |
| Term End: | 16 July 1897 |
| Predecessor: | Erik Gustaf Boström |
| Successor: | Hans Hansson Wachtmeister |
| Birth Date: | 17 November 1848 |
| Birth Place: | Skara, Sweden |
| Death Date: | 19 December 1919 (aged 71) |
| Death Place: | Enköping, Sweden |
Claës Richard Wersäll (17 November 1848 – 19 December 1919) was a Swedish governor and artillery officer. Between 15 March 1895 and 16 July 1897 he served as a Swedish Finance Minister. He was also the governor of Kopparberg County (1893–1901) and Västmanland County (1901–1916). During his career he was awarded the Order of the Polar Star (1895), Order of the Sword (1889), Order of St. Anna and Order of St. Olav.
Wersäll became an orphan at the age 11, and grew up with his aunt. In 1879 he married Charlotta Wersäll. Among their 11 children, 9 were boys, one was a girl, and one died soon after birth. They were
Six of the boys took part in the 1912 Summer Olympics: two as competitors, one as an official, and three as assistants, while another one, Ture, won an Olympic gold medal earlier in 1906. For this unusual achievement, their mother was awarded a special gold medal at the 1912 Games.
In 1914–1915 Wersäll developed a cerebral hemorrhage, which resulted in his deaths in 1919.