Martín Gaitán (born June 15, 1978 in Paraná) is a former Argentine rugby union footballer and a current coach. He played as a centre.

Gaitán started his career with Club Atlético San Isidro in 1997. He soon earned his debut for the national team, playing against the United States team in 1998. He then spent most of the next four years playing sevens.

In 2002, Gaitán moved to France to play for Biarritz, but only played two Heineken Cup seasons due to having an European passport^[1] and in 2003 he was selected to be part of the Argentina Rugby World Cup squad. In 2005, he eventually played in the French Championship from the 2004-05 season, taking part at the victory of the Bouclier de Brennus. He did not took part at the 2005 and 2006 finals due to a knee injury^[2].

He was selected to play for Argentina at the 2007 tournament, but a scan revealed that he had a blocked artery in his heart^[3], this meant that missed the tournament in order to have surgery. He eventually had to retire from rugby because of this^[4][5][6].

In 2009, he became coach of the Biarritz Olympique youth team and video analyst for the first-grade team^[7].

In 2012 and 2013, he was named assistant coach for Argentina under head coaches Santiago Phelan^[8][9] and Daniel Hourcade. Between 2013 and 2015, he was in charge of formating young coaches for Union Argentina de Rugby.