Áki Ásgeirsson (1975) is a composer and multimedia artist from Garður, Iceland. He has written music for traditional instruments as well as designed new acoustic instruments, audio software, computer controlled instruments and sound installations.

Áki studied music at the Keflavík Music School, the Reykjavík College of Music and the Royal Conservatory in The Hague, The Netherlands, with Martijn Padding and Clarence Barlow. His works have been performed by the Iceland Symphony Orchestra, Fengjastrútur, Aton ensemble, Caput ensemble, Skmendanikka, Maarten Altena ensemble, Hestbak, Poing, Blåsarsymfonikerna, Defun ensemble, Ingólfur Vilhjálmsson, Harpverk, Michael Manion and more in various countries.

He is a member of composer collective S.L.Á.T.U.R. and co-organises the RAFLOST festival for electronic art.