Roine Sven Torbjörn Karlsson (12 November 1943 – 17 February 2013) was a Swedish race walker. He competed in the 20 km event at the 1964 Summer Olympics where he placed 20th. Aged 20, he was the youngest Swedish track and field athlete at those games.
References Roine Karlsson. sports-reference.com Sweden Athletics at the 1964 Tokyo Summer Games. sports-reference.com Roine Carlsson. Swedish Olympic Committee