Mari Kvien Brunvoll (born 20 February 1984 in Molde, Norway) is a Norwegian folk and jazz singer who has over the past few years attracted attention at festivals internationally with her solo concept, where the voice is complemented by small electronic and acoustic instruments in a sound inspired by jazz, pop and folk music. She is the daughter of Lawyer Knut Anker Brunvoll (b. 1945) and jazz singer and pianist Inger Johanne Brunvoll (born Kvien in 1945), and the younger sister of songwriter, guitarist and vocalist Ane Brun (b. 1976) and photographer Bjørn Brunvoll (b. 1973).