| Vasyl Kasiian Василь Касіян | |
| Birth Name: | Vasyl Illich Kasiian |
| Birth Date: | 1 January 1896 |
| Birth Place: | Mykulyntsi, Kingdom of Galicia and Lodomeria, Austria-Hungary |
| Death Place: | Kyiv, Ukrainian SSR, Soviet Union |
| Occupation: | Artist, graphic |
| Nationality: | Ukrainian |
Vasyl Illich Kasiian (Ukrainian: Василь Ілліч Касіян; 1 January 1896 – 26 June 1976) was a Soviet and Ukrainian painter, graphic, parliamentary, People's Painter of the USSR, academician of the Academy of Arts of the Soviet Union.
A native of Eastern Galicia, he was a World War I veteran. While studying in Academy of Fine Arts, Prague in 1920s, Kasiian was a student of Czech painter Max Švabinský.