Sigmar Guðmundsson (born 7 April 1969) is an Icelandic politician from Viðreisn.

During his high school years, Sigmar participated in the Icelandic High School Speech and Debate Competition (Morfís) on behalf of Fjölbrautaskólinn í Garðabæ [is] and was chosen as the national speaker in 1988 and 1990.

He began his media career in radio on X-ið [is] and Aðalstöðinn, but since the mid-1990s has mostly worked at RÚV, apart from a two-year stint at Stöð 2 at the turn of the century.

[2] Within the walls of RÚV, Sigmar worked in various programming, for example as a journalist in Kastljós and an interviewer in Gettu Betur in 2006-2008 and in Útsvari in 2007-2017 (along with Thóra Arnórsdóttir).

He was in charge of the programs Inter Nos on RÚV and Morgunútvarp Rásar 2.