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| versions = You Know What You Are?<br>You Know What You Are? (Clint Mansell Remix)<br>You Know What You Are? (''[[Beside You In Time (halo)|Beside You In Time]]'')

}}'''"You Know What You Are?"''' is the second track from 2005's ''[[With Teeth (halo)|With Teeth]]''. It is a very aggressive and upbeat song, featuring a gang-shouting chorus and heavy guitar tracks. A remix of this song by [[Clint Mansell]] appeared on the ''Doom'' soundtrack, and played during of end credits of that movie. The title strongly resembles a track on the ''[[Head Like A Hole (halo)|Head Like A Hole]]'' single, entitled "[[Head Like A Hole (song)|You Know Who You Are]]."