| Pierre Viau | |
| Played For: | Chicago Cougars (WHA) Long Island Ducks (EHL) Johnstown Jets (NAHL) |
| Position: | Defence |
| Shoots: | Left |
| Height Ft: | 6 |
| Height In: | 1 |
| Weight Lb: | 181 |
| Birth Date: | 29 January 1952 |
| Birth Place: | Montreal, Quebec, Canada |
| Draft: | Undrafted |
| Career Start: | 1972 |
| Career End: | 1974 |
Pierre Viau (born January 29, 1952) is a Canadian former professional ice hockey defenceman.
During the 1972–73 season, Viau played four games in the World Hockey Association with the Chicago Cougars.[1]