Sub is the debut album by Swiss industrial metal band Apollyon Sun, released in 2000 on Mayan Records.

Sub features prominent final mixes by Mosimann, John Fryer (HIM, Nine Inch Nails), and Apollyon Sun themselves.

Sub was released globally through Mayan Records in late summer 2000, after two years of studio work.

"Reefer Boy" and "Concrete Satan" both appeared on the God Leaves (And Dies) EP, however they were completely re-recorded for Sub.

There are several unreleased songs from these sessions including "Cradle", a re-recorded version of "God Leaves" and two further instrumentals.