Áki Ásgeirsson is a composer and musician who was born in 1975 in Keflavík, Iceland. He studied at the Keflavík Music School, the Reykjavík College of Musicand the Royal Conservatory in The Hague, The Netherlands and currently lives in Reykjavík. He has written instrumental music and music for instruments and computer.

His music has been performed by the Iceland Symphony Orchestra and musicians such as Michael Manion and the Norwegian POING ensemble. His music has been performed in China, Russia, Denmark, Norway, Sweden, Finland, Iceland, Greenland, the Faroe Islands, The Netherlands, Germany and various places in the United States of America.

Áki has been active as a trumpet player, mostly with experimental improvisation ensembles. He developed the SensorTrumpet, an electronic trumpet with add-on's to interact with a computer.