Marcus Adam (born 28 February 1968) is an English retired sportsperson, who represented Great Britain as both a sprinter and a bobsledder.

[3] In 1989, Adam started by winning the silver medal at the Amateur Athletics Association (AAA) Indoor Championships.

[5] Also, in June 1989 he helped establish a British record of 1:21.29 minutes in the rarely contested 4 x 200 metres relay (together with Ade Mafe, Linford Christie and John Regis).

[7] He went on to win a second gold medal in the 4 x 100 metres relay (together with Clarence Callender, John Regis and Linford Christie).

[6] Adam achieved a personal best time in the 100 metres in July 1991, clocking in 10.23 seconds at a meet in Birmingham.

[7] At the 1992 Summer Olympics, Adam reached the final of the 200 metres, finishing in eighth place with a time of 20.80 seconds.

As a brakeman, he finished tenth in the two-man event at the 2002 Winter Olympics[12] together with Lee Johnston.