The Xenon Codex is the fifteenth studio album by the English space rock group Hawkwind, released in 1988.

The cover is by Bob Walker, who had also illustrated the inner sleeve for The Chronicle of the Black Sword and adapted Michael Butterworth's Ledge of Darkness in graphic novel form.

It is an Art Deco design derived from the hawk by Barney Bubbles on the rear cover of Astounding Sounds, Amazing Music.

He was replaced by former Dumpy's Rusty Nuts drummer Mick Kirton for some September dates, but the group felt he was unsuitable.

Richard Chadwick, a veteran drummer of groups involved with the English free-festival scene, then joined for an 18 date UK tour in November and December.