Rolf Fredrik "Truls" Klausen (born 23 March 1946)[1] is a Norwegian former professional footballer who played as defender.
After starting his career with Frigg Oslo and Vålerenga Fotball in the early 1970s, he spent most of his career, from 1975 to 1984, at FK Bodø/Glimt, who won the 1975 Norwegian Football Cup in his first season and were promoted the following season to Eliteserien.
Raised in Narvik, Klausen distinguished himself in youth football at Nor[2] before beginning his professional career in Oslo, where he played for Frigg in Eliteserien, the Norwegian top league.
[4] In summer 1980 he was on short-term loan to Nor;[5] in 1981 he succeeded Harald Berg as team captain at Bodø/Glimt, retiring in 1984.
[4] On 16 May 1995, he was working for Glimt as a physiotherapist at a match against Tromsø Idrettslag when Harald Aabrekk, the Tromsø coach, fell on the sidelines and was carried off and taken to a hospital; Aabrekk said that Klausen had "tackled" him, occasioning wide press coverage.