Sinfóníuhljómsveit Íslands is an Icelandic orchestra based in Reykjavík, Iceland. Its primary concert venue is the Harpa Concert Hall. The Iceland Symphony is an autonomous public institution under the auspices of the Icelandic Ministry of Education. Iceland Symphony Orchestra made its home in Háskólabíó from 1961 to 2011, but moved into the new 1800-seat Harpa Concert Hall in spring 2011. The orchestra gives approximately sixty concerts each season. Per a 1982 law, the Iceland Symphony's primary financial sources are the Icelandic treasury and the City of Reykjavik.
Eva Ollikainen has been chief conductor and artistic director of the orchestra since September 2020. Osmo Vänskä is the orchestra's honorary conductor and Vladimir Ashkenazy holds the post of Conductor Laureate. Daníel Bjarnason is the orchestra's artist-in-association. Anna Thorvaldsdottir became the orchestra's composer-in-residence in 2018. Víkingur Heiðar Ólafsson joined the roster in 2021 as artist in residence and Bertrand de Billy the same year as principal guest conductor. Kornilios Michailidis was appointed as conductor-in-residence 2021.