"Perfect Day" is a song written by American musician Lou Reed in 1972. It was originally featured on Transformer, Reed's second post–Velvet Underground solo album, and as a double A-side with his major hit, "Walk on the Wild Side". Its fame was given a boost in the 1990s when it was featured in the 1996 film Trainspotting and after a star-studded version was released as a BBC charity single in 1997, reaching number one in the United Kingdom, Ireland, and Norway. Reed re-recorded the song for his 2003 album The Raven.