William Maddison
| Medal record | ||
|---|---|---|
| Sailing | ||
| Representing Great Britain | ||
| Olympic Games | ||
| 1920 Antwerp | 7 metre | |
William Maddison (1882 – 10 June 1924) was a British sailor and Olympic champion. He competed at the 1920 Summer Olympics in Antwerp and won a gold medal in the 7 metre class aboard the Ancora.