"Birthday" is a song written and recorded by Icelandic alternative rock band the Sugarcubes. It was released as a single in 1987, and included in their 1988 debut album Life's Too Good. It was their first international single and the first single released from the album. The Icelandic version, "Ammæli", was released on the Iceland-only single "Einn Mol'á Mann" the previous year, and it was included as the B-side on the international single and on the frontwoman Björk's box set Family Tree (2002).