Oskar Wilhelm Wetzell (5 December 1888 – 28 November 1928) was a Finnish diver, who competed at the 1908 and the 1912 Summer Olympics.

[4] He won eight Finnish national championships in diving: He represented the clubs Helsingfors Simsällskap and Helsingin Uimarit.

His father worked initially at the Sinebrychoff Brewery in Helsinki and later went on to become a merchant.

[8] He was an inaugural board member of the Nordic Balticum Deaf Sport Federation.

[9] He was a founding member of the Finnish Deaf Sports Federation,[10] and was its secretary in 1921–1922.