Hildur Ingveldardóttir Guðnadóttir (b. 1982) is a cellist and composer. Best known for her collaborations with múm and guest appearances with Pan Sonic, she has a rich catalogue of collaborations and varied projects behind her. Guðnadóttir began playing cello as a child, entered the Reykjavík Music Academy and then moved on to musical studies/composition and new media at the Iceland Academy of the Arts and Universitat der Kunste in Berlin.