Robert 'Bob' Boyd Weir (born 4 February 1961 in Birmingham) is a male retired English athlete, best known as a discus thrower, who was a twelve-time national champion.

Weir also achieved success in hammer throw, winning Commonwealth Games gold in 1982, and competed in strongman competitions.

His daughter, Jillian Weir, representing Canada, won bronze in the women's hammer at the 2022 Commonwealth Games in Birmingham, England, emulating her father's achievement 20 years before.

This places him fifth among English discus throwers, behind Perriss Wilkins, Richard Slaney, Glen Smith and Carl Myerscough.

[5][6] Weir also competed at the 1997 World's Strongest Man competition, finishing 3rd in a qualifying group of six, only being beaten by Jouko Ahola and Flemming Rasmussen who went on to finish as champion and runner-up respectively in the 1997 final .