Ásdís Valdimarsdóttir was born in Reykjavik, Iceland. Her viola studies took her to the Juilliard School in New York where she studied mainly with Paul Doktor, William Lincer, Felix Galimir and the Juilliard Quartet. After graduating with BM and MM degrees she continued her studies at Detmold, Germany with Nobuko Imai.

Ásdís was a founding member of the Miami String Quartet, principal viola of the Deutsche Kammerphilharmonie Bremen and a frequent guest of the Chamber Orchestra of Europe and the Ensemble Modern before joining the Chilingirian String Quartet 1995. She was their violist until 2003. She is now based in Amsterdam and enjoys a mixture of chamber music and solo work. She has been invited to many prestigious music festivals around the world and teaches viola at The Royal Northern College of Music, Manchester.