Valgeir Sigurðsson (born 1971) is an Icelandic record producer, mixer, composer, engineer and musician.
Coming from a musical background Valgeir's fascination with recording technology lead to a job in a small recording studio at the age of 16. He studied classical guitar and graduated with a Tonmeister degree from London's SAE Institute. In 1998 Valgeir was hired by fellow countrywoman Björk as engineer and programmer on the soundtrack for Lars Von Trier's Dancer in the Dark. A song from the film, I've Seen It All (a duet with Radiohead's Thom Yorke) was nominated for the Academy Award for Best Original Song but lost to Bob Dylan's Things Have Changed. Valgeir created the distinctive train-rhythm that runs through the song. His working relationship with Björk continued beyond the film project and was consistent from early 1998 until 2006, during which time Valgeir was one of her main studio collaborators.
Valgeir is the founder of Greenhouse Studios, Iceland’s top recording facility established in 1997. In 2005 he founded the Bedroom Community record label launching the recording career of Nico Muhly and producing and releasing albums by Ben Frost and Sam Amidon. He has composed music for TV, film and theater and his debut solo album Ekvílibríum was released by Bedroom Community in 2007, followed by a release of his soundtrack for Dreamland (Draumalandið) in 2010.
Valgeir has collaborated with a number of noted and diverse artists such as Björk, Bonnie 'Prince' Billy, Camille, CocoRosie, Ben Frost, Howie B, Kronos Quartet, The Magic Numbers, múm, Feist and Nico Muhly