Marko Baša (born 29 December 1982 in Trstenik, SR Serbia, SFR Yugoslavia) is a Montenegrin footballer who plays as a centre back for Lille and the Montenegro national team.

Lille

On 23 June 2011 Marko Baša returned to France after three years in Russia with Lokomotiv Moscow, signing a contract with 2010-11 Ligue 1 champions Lille. He is first choice for centre back. He scored his first goal for Lille against Olympique de Marseille in Trophée des champions. His team lost 4:5. He scored his first goal in Ligue 1 for Lille on 23 October, against Olympique Lyonnais. His team won 3:1. He scored again in a 3:2 victory over Ajaccio on 3 December.

Serbia and Montenegro
Baša has capped for Serbia and Montenegro in 2005. All were friendlies. He has also played for Serbian and Montenegro national team at the 2004 Summer Olympics.

In the years after the dissolution of Serbia-Montenegro state union, Baša's international loyalty remained unclear. He received a call-up from Serbia national team by head coach Javier Clemente for the away friendly against Czech Republic on 16 August 2006 (first match since Montenegro left the state union) but did not show up - apparently because of an injury. Since then, his international loyalty was often a subject of press speculation, but he did not receive any more official call-ups from Serbia.

Montenegro
In March 2007 he was frequently quoted in Montenegrin press (namely Vijesti daily) saying that he wants to play for Montenegro, but he made himself unavailable for their inaugural match on 24 March 2007 due to, as he said, "objective circumstances".

Then, in late May he apparently did not respond to Montenegrin football officials' attempts to get in touch with him and as a result he wasn't included in the team that went to Japan to play in Kirin Cup. Finally, Baša received a call-up from Montenegro for their friendly against Slovenia on 22 August 2007 but did not show up.

Only in February 2009, new information appeared that Baša is considering appearing for Montenegro again if he gets a call up after Montenegro national team coach Zoran Filipović insistence. He received a call-up against Italy in March 2009, and made his debut as starter. He plays regularly for national team.