Robert Linus Alexander Klasen (born 19 February 1986) is a Swedish professional ice hockey player who is currently playing for Djurgårdens IF of the HockeyAllsvenskan (Allsv).

Klasen started his career with Huddinge IK and has played with Södertälje SK in the Swedish Elitserien.

On 30 October 2010 Klassen made his NHL debut with the Nashville Predators in an away game against the Detroit Red Wings.

[5] After the final year of his contract with Luleå, in which Klasen compiled his most prolific SHL season with 28 goals and 57 points in just 54 games, he left as a free agent to sign a lucrative four-year contract with Swiss club, HC Lugano, of the NLA on 2 April 2014.

After 6 seasons and 265 games with HC Lugano in the NL, Klasen was not offered a contract extension and decided to return to his native Sweden by signing a two-year deal with Luleå HF of the SHL.