Eyvind Alnæs (1872-1932) was a Norwegian composer and organist. He is considered one of the leading figures in Norwegian classical music and played a significant role in the development of a distinct national musical style.

Alnæs was born in Tromsø, Norway, and began studying music at a young age. He later studied at the Leipzig Conservatory in Germany, where he graduated with a degree in organ performance.

After completing his studies, Alnæs returned to Norway and took up a position as organist at the Cathedral of Tromsø. In addition to his work as a performer, he also composed music and taught at the Tromsø Conservatory.

Alnæs's compositions were diverse and included works for orchestra, chamber music, and piano. Many of his works were inspired by Norwegian folk music and landscape, and he is known for incorporating elements of Norwegian folk music into his compositions.

Some of Alnæs's most notable works include his Symphony in D major, his String Quartet in A minor, and his piano suite "Norske folketoner" (Norwegian Folk Tunes).

In addition to his work as a composer, Alnæs was also active in the Norwegian musical community and worked to promote the work of fellow Norwegian composers. He died in Tromsø in 1932, leaving behind a legacy as one of Norway's most important classical composers.