Geirr Tveitt, (October 19, 1908- February 1, 1981),was a Norwegian composer born in Bergen. He studied in Leipzig and Paris, and returned to live in Norheimsund, Hardanger in 1942. Much of his output was lost in a fire at his house in Hardanger in 1970, but perhaps a fifth still remains. He died in Norheimsund in 1981.

An unusual feature of his musical output is that much of it is not in classical major and minor tonalities, but expressed in terms of modess, such as lydian, dorian. For example, his piece Prillar is in G lydian.

Some of his music was saved from the fire, and some has been reconstructed from available material.

His remaining music includes:

  • Prillar in G lydian (1931) - Sun God Symphony
  • Suites 1,2,4,5 of A Hundred Hardanger Tunes, Op 151
  • Piano concertos 1-5
  • Nykken, Symphonic Poem
  • Jeppe, Opera
  • Violin concerto 1 (Hardanger fiddle)
  • Violin concerto 1 (Hardanger fiddle), Three Fiords
  • Baldur, ballet drama
  • Halldor Meland