Zero is a song by The Smashing Pumpkins. It was the fourth single from their third album, Mellon Collie and the Infinite Sadness and was a return to the familiar angsty rock of the first single, "Bullet with Butterfly Wings". "Zero" was written by Billy Corgan.

Unlike most singles, "Zero" was released as an EP and included "Pastichio Medley", a medley of parts of songs from the Mellon Collie sessions that would most likely remain unreleased. The medley runs over 23 minutes and features over 70 songs. The medley also features snippets of songs that actually were released; the snippet of the song "Disconnected" is a riff from a song that was released in the future, "The Aeroplane Flies High (Turns Left, Looks Right)" and the riff called "Rachel" ended up being worked into the album track "x.y.u.".

The track "Tribute to Johnny" is an instrumental; an homage to guitarist Johnny Winter. It was not long after the release of the EP that Smashing Pumpkins touring keyboardist Jonathan Melvoin died of a heroin overdose, leading many uninformed fans to assume this song was a tribute to Melvoin.

The cover artwork featured photography by Corgan's girlfriend, Yelena Yemchuck.

EP tracklist

1. "Zero" (Corgan)
2. "God" (Corgan)
3. "Mouths of Babes" (Corgan)
4. "Tribute to Johnny" (Corgan)
5. "Marquis in Spades" (Corgan)
6. "Pennies" (Corgan)
7. "Pastichio Medley" (Corgan)