| Name | Boats | Last known start |
|---|---|---|
| William Batt | ||
| William Brummond | ||
| William C. Belvel | ||
| William C. Ligety | ||
| William Carlew | ||
| William Courteau | ||
| William D. Gregoris | ||
| William Dickey | ||
| William F. MacLean | ||
| William Finlay | As a crew in 1989 in the World Championship on 8095 | |
| William Garnier | As a crew in 1999 in the Weymouth Open on 8380 | |
| William Goodacre | As a helmsman in 1980 in the World Championship on 6853 | |
| William Huebner | As a crew in 2024 in the Lake Sunapee Invitational on 8851 | |
| William Ingram | As a helmsman in 1988 in the UK National Championship on 7626 | |
| William Jacobs | ||
| William McNally | ||
| William Miller | As a crew in 2010 in the World Championship on 8841 | |
| William Oliver | ||
| William Paine | ||
| William Peaver | As a helmsman in 1977 in the World Championship on 5190 |