Sigurjón Kjartansson (born 20 September 1968) is an Icelandic writer and producer. He is known for his role in the radio duo Tvíhöfði with Jón Gnarr and for his part in the popular Icelandic television sketch comedy Fóstbræður. He has since written many Icelandic TV series, including Svínasúpan (2004), Stelpurnar (2005-2008) and the drama series Pressa (2007-2012), "Réttur" (2009-2010) In the years 1988 to 1994, he was active in the Icelandic music scene as vocalist and lead guitarist in the metal band HAM. In 1992 he wrote the score for the Icelandic cult film Sódóma Reykjavík. Sigurjón is the Head of Development at Baltasar Kormákur's RVK Studios. He is head writer and executive producer of the drama series "Trapped".  "Trapped" is currently in production an will be premiered in 2015.