| Brant Weidner | |
| Height Ft: | 6 |
| Height In: | 9 |
| Weight Lb: | 230 |
| Birth Date: | 28 October 1960 |
| Birth Place: | Orefield, Pennsylvania, U.S. |
| High School: | Parkland |
| College: | William & Mary (1979–1983) |
| Draft Year: | 1983 |
| Draft Round: | 4 |
| Draft Pick: | 90 |
| Draft Team: | San Antonio Spurs |
| Career Start: | 1983 |
| Career End: | 1984 |
| Career Number: | 25 |
| Career Position: | Power forward |
| Years1: | 1983–1984 |
| Team1: | EBBC |
| Years2: | 1984 |
| Team2: | San Antonio Spurs |
Brant Clifford Weidner (born October 28, 1960) is an American former professional basketball player from the National Basketball Association. He played one season in the league, appearing in just eight regular-season games.
Weidner played basketball at Parkland High School in South Whitehall Township, Pennsylvania and then at William & Mary in Williamsburg, Virginia.
In 1983, he was selected by the San Antonio Spurs with the 20th pick of the 4th round (90th overall) in the 1983 NBA draft.