Kristian Blak (born 31 March 1947), originally from Fredericia, Denmark, lives in the Faroe Islands where he is a composer, musician, and record executive. He is the founder of the Nordic musical ensemble Yggdrasil (named after the World tree Yggdrasil). He has worked with sounds in the Faroese nature in several compositions. These include concerts in caves and other natural "concert halls" in the Faroe Islands. He has composed solo instrumental works, chamber music, choral works and symphonic music, for example the ballad Harra Pætur og Elinborg. In 2010 Queen Margrethe of Denmark visited the Faroe Islands, and one of the events she visited was a grotto concert in Klæmintsgjógv (Gorge of Klæmint) by Kristian Blak and other musicians. The cave is 50 meter high and the sea in the cave is around 400 meter deep. There are some places inside the cave where the musicians can stand with their instruments and give a concert to the audience in the boats.
He is the chief executive officer of Tutl, which is the leading record label in the Faroe Islands.
In 2002 he received the Faroese Literature Prize for his work with music in the Faroe Islands. In 2011 he received the Heiðursgáva Landsins, which is handed at the same time as the Faroese Literature Prize, given by the Faroese government.