Lars Magnus Carlsson (born June 24, 1974 in Borås, Sweden) is a Swedish singer and former member of the bands Alcazar and Barbados.

Carlsson was first a singer in the Swedish dansband Barbados. Though near the end of 2002, he left Barbados and joined the Pop-disco group Alcazar.

Carlsson participated in Melodifestivalen every year between 2000 and 2007 inclusive, except for 2004, either with Barbados, Alcazar or as a solo act.

At the end of 2002, Carlsson decided to leave Barbados, and on December 13, 2002, Carlsson became an official member of the pop group Alcazar. On January 24, 2003 he performed his last concert with Barbados.

In February 2006, he was a contestant in Melodifestivalen's semi-final in Karlstad with "Lev Livet!", composed by Anders Glenmark and Niklas Strömstedt, and qualified for the final in Globen.

In 2007 Magnus performed in the third heat of Melodifestivalen 2007 in Örnsköldsvik with "Live Forever", an eighties-inspired electropop dance song. The entry came in 5th place and was knocked out of the contest but still became the 6th most frequently played song on Swedish radio in 2007. The song was released as a single on March 5, 2007, and reached the status of gold certificate.