Marc Koch (born 24 May 1994) is a German sprinter. He was the German national indoor champion over 400 metres in 2017. He won a bronze medal in the Men's 4 x 400m relay at the 2024 European Athletics Championships.
He was a bronze medalist at the 2015 European Athletics U23 Championships in Tallinn in the men's 4x400m relay.
He became the German national indoor champion over 400 metres in February 2017 in Leipzig. Subsequently, he competed at the 2017 European Athletics Indoor Championships in Belgrade in March 2017.
He set a new personal best for the 400 metres of 46.10 in Regensburg in May 2024. That month, he ran as part of the Men’s 4x400m relay team at the 2024 World Relays Championships in Nassau, Bahamas which qualified for the 2024 Paris Olympics.
He ran as the German team that won bronze at the 2024 European Athletics Championships in Rome in June 2024.
From Berlin, he and his wife Saskia run a coffee roasting business.