Mark Steiner (born 1970) is a Norwegian-American rock musician, guitarist, songwriter and producer.

In 1997, through a classified ad in The Village Voice, Steiner started a band called Piker Ryan's Folly. It gave its last performance in 2000 at CBGB, at an event intended to save a neighboring tenement building, 295 Bowery, from demolition. Afterwards Eric Wolter and Steiner started a new band called Kundera. In 2002, Steiner moved to Oslo, Norway. In 2006, he contributed a track to a tribute CD for Australian musician Rowland S. Howard. In 2007 he recorded songs in Paris and New York for a debut solo CD Fallen Birds. In 2009, a second record "Broken" was released in a two-CD edition by Z-Man Records. In late 2014, he released Saudade under the name of Mark Steiner & His Problems, which featured both original works as well as interpretations of songs by deceased artists Billie Holiday, Lou Reed, Bruno Adams, Robert Burås, and Rowland S. Howard. He has performed as an opening act for Michael Gira, Kid Congo Powers, Devendra Banhart, Mick Harvey, Madrugada, Norwegian singer Ingrid Olava, Rowland S. Howard, Hugo Race and others.