Maarten Stekelenburg (born 22 September 1982) is a Dutch professional footballer who plays as a goalkeeper for Eredivisie club Ajax and the Netherlands national team.

Stekelenburg began his career at Ajax, playing 282 matches over nine seasons and winning nine honours, including two Eredivisie titles. He went on to play for Roma, Fulham, Monaco, Southampton and Everton. He returned to Ajax following the expiry of his contract at Everton following the 2019–20 Premier League season.

Stekelenburg made his debut for the Netherlands in 2004, and has earned 60 caps in total as of June 2021. He was understudy to Edwin van der Sar at the 2006 FIFA World Cup and UEFA Euro 2008, then was first choice as he helped his nation to the final of the 2010 World Cup, also playing at Euro 2012 and Euro 2020.

On 7 March 2021, Stekelenburg was one of 31 players called up by Frank de Boer for the 2022 FIFA World Cup qualification matches against Turkey, Latvia, and Gibraltar.