Marius Kipserem (born 17 May 1988) is a Kenyan long-distance runner who specializes in the marathon. He has notably won the Rotterdam Marathon twice in 2016 and 2019. With his second victory, he set a new course record and personal best of 2:04:11. He also won the 2018 Abu Dhabi Marathon and finished second at the 2016 Eindhoven Marathon. He was also a member of the team that helped pace Eliud Kipchoge for the Ineos 1:59 Challenge in 2019.

In October 2022, Kipseram was issued with a three-year ban for an anti-doping rule violation for using EPO.

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