Árstíðir (English: Seasons) is an Icelandic classically influenced indie-folk rock/chamber pop band.

When they recorded their first album, Árstíðir, Jónas Jensson (cello) and Jón Elísson (piano) joined the band.

Jón Elísson and Hallgrímur Jónas Jensson left Árstíðir in late 2013, and Karl James Pestka in 2016.

In Iceland, they have their own record company, Nivalis, and in Germany they have a cooperation contract with Beste Unterhaltung.

Árstíðir became known to a wider internet audience in 2013 when a YouTube video of an impromptu a capella performance of Heyr himna smiður, (English: Hear, Smith of Heavens), a 13th-century Icelandic hymn, at Vohwinkel train station in Wuppertal, Germany went viral after a performance there.