Mārtiņš Karsums (born February 26, 1986 in Riga, Soviet Union) is a Latvian professional ice hockey player currently playing as a right winger for Dinamo Riga of the Kontinental Hockey League (KHL). Karsums was selected in the second round, 64th overall, in the 2004 NHL Entry Draft by the Boston Bruins. He has also played for the Tampa Bay Lightning.