Thesleff

Thesleff is a surname. Notable people with the surname include:


 * Alexander Amatus Thesleff (1907–1983), Finnish diplomat and lawyer
 * Ellen Thesleff (1869-1954), Finnish painter
 * Irma Thesleff, Finnish biologist
 * Jan Thesleff (born 1959), Swedish diplomat
 * Rolf Thesleff (1878–1938), Finnish educator and diplomat
 * Wilhelm Alexander Thesleff (1880-1941), Finnish general