Hilding Hallnäs (24 May 1903 – 11 September 1984) was a Swedish composer.
[1] Hallnäs was married to the actress Gun Holmquist.
After matriculation in his home town, he entered the Royal College of Music, Stockholm in 1924,[2] studying with Gustaf Hägg and Otto Olsson, and graduated as an organist (1926) and music teacher (1928).
[1] Prior to the Second World War Hallnäs was counted among neoclassicists such as Dag Wirén and Lars-Erik Larsson, but after he began using his own 12-tone system, first heard in his fourth symphony (1952–1955) Metamorfosi sinfonice.
Hallnäs was awarded the Illis quorum in 1963 and the Litteris et Artibus in 1981.