| William von Wirén | |
| Birth Place: | Suuresadama, Kreis Wiek, Governorate of Estonia, Russian Empire |
| Death Place: | Stockholm, Sweden |
| Show-Medals: | yes |
William von Wirén (in Suuresadama, Hiiumaa – 23 November 1956 in Stockholm) was an Estonian sailor who competed in the 1928 Summer Olympics.
In 1928 he was a crew member of the Estonian boat Tutti V which won the bronze medal in the 6 metre class.
He also won gold medal in European Championships in ice yachting in 20 m class in 1933 and 1934 and a bronze medal in International Monotype-XV ice yacht class in 1936.