Roar Berthelsen (3 November 1934 – 1 August 1990) was a Norwegian long jumper.
He represented Mandal og Halse IL and IK Tjalve.
He also competed at the 1960 Summer Olympics without qualifying for the final.
[2] His personal best jump was 7.62 metres, achieved in August 1959 at Bislett stadion.
This biographical article relating to Norwegian athletics is a stub.