Mārtiņš Pļaviņš (born 8 May 1985 in Riga) is a Latvian beach volleyball player. He teamed up with Aleksandrs Samoilovs in 2004. Pļaviņš and team mate Samoilovs represented Latvia at the 2008 Summer Olympics in Beijing, China after which they stopped playing together. At the 2008 Olympics, the #21-ranked Latvian team achieved a major upset in the preliminary round, beating the #1-ranked team of Todd Rogers and Phil Dalhausser (United States). Latvian team won its preliminary round group and in round of 16 lost to Austrian team Florian Gosch and Alexander Horst.