Marcus Adriano Birro (born 15 June 1972 in Gothenburg, Sweden) is a Swedish-Italian (Italian citizen) poet, author and columnist and former frontman of cult punk band The Christer Petterssons. Birro blogged at Expressen and was a presenter at Sveriges Radio Östergötland, where he was the host of Karlavagnen on Sveriges Radio P4. He is the brother of author Peter Birro. Marcus Birro lives in Södermalm, is divorced from his wife of 4 years, they have two children together.