Ragnar Klavan is an Estonian professional footballer who plays as a defender for JK Tallinna Kalev. A left-footed centre back, he has also played as a left back during his career.

JK Tallinna Kalev, also known as Tallinna Kalev or simply Kalev, is an Estonian professional football club based in Tallinn that competes in the Meistriliiga, the top flight of Estonian football. Founded in 1911, they are the oldest active football club in the country. The club's home ground is the Kadriorg Stadium.