| William Smith | |
| Height Ft: | 7 |
| Height In: | 0 |
| Weight Lb: | 220 |
| Nationality: | American |
| Birth Date: | 14 February 1949 |
| Birth Place: | Rochester, New York |
| High School: | Rush–Henrietta (Henrietta, New York) |
| College: | Syracuse (1968–1971) |
| Draft Year: | 1971 |
| Draft Round: | 3 |
| Draft Pick: | 42 |
| Draft Team: | Portland Trail Blazers |
| Career Number: | 43 |
| Career Position: | Center |
| Years1: | – |
| Team1: | Portland Trail Blazers |
William A. Smith (born February 14, 1949) is a retired American professional basketball center who played two seasons in the National Basketball Association (NBA) as a member of the Portland Trail Blazers (1971–73). He was drafted by the Blazers in the third round (42 pick overall) of the 1971 NBA draft from Syracuse University, where he holds the individual player single game scoring record of 47 points achieved on January 14, 1971 against Lafayette College.