Ragnar Klavan (born 30 October 1985) is an Estonian professional footballer who plays as a defender for Italian club Cagliari and captains the Estonia national team.
A left-footed centre back, he has also played as a left back during his career.
Klavan played for Elva, Tulevik and Flora in Estonia, winning the Meistriliiga with Flora in the 2003 season, before moving to the Netherlands where he represented Heracles Almelo and AZ, winning the Eredivisie with the latter in the 2008–09 season. In 2012, he transferred to FC Augsburg and spent four seasons in the Bundesliga before his move to Liverpool in 2016 for €5 million. In 2018, Klavan signed for Cagliari in a transfer worth £2 million.
Klavan made his senior international debut for Estonia in 2003, and became captain in 2012. In 2015, he became the ninth player to make 100 appearances for Estonia, and is currently the fifth-most capped player in the history of the national team. Klavan has won the Estonian Footballer of the Year award a record seven times, in 2012, 2014, 2015, 2016, 2017, 2018 and 2019.