| Position: | Defence |
| Shoots: | Right |
| Height Ft: | 6 |
| Height In: | 0 |
| Weight Lb: | 190 |
| Played For: | Edmonton Oilers Quebec Nordiques Houston Aeros Indianapolis Racers |
| Birth Date: | 1950 6, mf=yes |
| Birth Place: | Lindsay, Ontario, Canada |
| Career Start: | 1967 |
| Career End: | 1980 |
William John Prentice (born June 10, 1950) is a Canadian retired professional ice hockey defenceman. He played 158 games in the World Hockey Association with the Edmonton Oilers, Quebec Nordiques, Houston Aeros, and Indianapolis Racers.
| Team | League | GP | GP | G | A | Pts | PIM | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1970–71 | Michigan Technological University | NCAA | 29 | 3 | 5 | 8 | 39 | — | — | — | — | — | ||
| 1971–72 | Michigan Technological University | NCAA | 29 | 2 | 7 | 9 | 69 | — | — | — | — | — | ||
| 1972–73 | Michigan Technological University | NCAA | 34 | 6 | 12 | 18 | 78 | — | — | — | — | — | ||
| 1972–73 | Houston Aeros | WHA | 3 | 0 | 1 | 1 | 0 | — | — | — | — | — | ||
| 1973–74 | Houston Aeros | WHA | 55 | 1 | 2 | 3 | 35 | 10 | 0 | 0 | 0 | 5 | ||
| 1973–74 | Jacksonville Barons | AHL | 14 | 0 | 5 | 5 | 28 | — | — | — | — | — | ||
| 1974–75 | Tulsa Oilers | CHL | 42 | 1 | 7 | 8 | 85 | 2 | 0 | 0 | 0 | 2 | ||
| 1974–75 | Houston Aeros | WHA | 17 | 0 | 3 | 3 | 19 | 4 | 0 | 0 | 0 | 0 | ||
| 1975–76 | Indianapolis Racers | WHA | 38 | 4 | 2 | 6 | 92 | — | — | — | — | — | ||
| 1975–76 | Quebec Nordiques | WHA | 21 | 2 | 5 | 7 | 89 | 5 | 0 | 0 | 0 | 17 | ||
| 1976–77 | Edmonton Oilers | WHA | 3 | 0 | 0 | 0 | 2 | — | — | — | — | — | ||
| 1976–77 | Maine Nordiques | NAHL-Sr. | 27 | 5 | 2 | 7 | 43 | — | — | — | — | — | ||
| 1977–78 | Indianapolis Racers | WHA | 21 | 1 | 1 | 2 | 28 | — | — | — | — | — | ||
| 1977–78 | Hampton Gulls | AHL | 25 | 0 | 1 | 1 | 15 | — | — | — | — | — | ||
| 1978–79 | Nova Scotia Voyageurs | AHL | 64 | 2 | 5 | 7 | 87 | — | — | — | — | — | ||
| 1978–79 | Philadelphia Firebirds | AHL | 18 | 2 | 3 | 5 | 14 | — | — | — | — | — | ||
| 1979–80 | Saginaw Gears | IHL | 11 | 1 | 3 | 4 | 24 | — | — | — | — | — | ||
| WHA totals | 158 | 8 | 14 | 22 | 265 | 19 | 0 | 0 | 0 | 22 | ||||