| Brian MacLaren | |
| Sport: | Sprinting |
| Event: | 400 metres |
| Birth Date: | 21 December 1943 |
| Birth Place: | Winnipeg, Manitoba, Canada |
Brian MacLaren (born 21 December 1943) is a Canadian sprinter. He competed in the men's 400 metres at the 1972 Summer Olympics. He finished second in the 1967 Pan American Games 4 × 400 metres relay (with Bill Crothers, Ross MacKenzie, and Robert McLaren) and third in the 1967 Pan American Games 800 metres.[1] He won a silver medal in the 1966 British Empire and Commonwealth Games 4 x 440 yards relay with Don Domansky, Ross MacKenzie and Bill Crothers.
In 1989, MacLaren was inducted into the Manitoba Sports Hall of Fame.