- This strip of The Whiteboard has Black Hat Guy as one of the players in a paintball game getting some ammo.
- Black Hat Guy also appears in this strip of Arthur, King of Time and Space snarking about AKOTAS's "gritty realism".
- #249: Chess Photo is referenced in the bonus panel of this Mr. Lovenstein.
- Questionable Content:
- Saturday Morning Breakfast Cereal often references xkcd, including an alt-image reference to an alt-text reference xkcd made to SMBC.
- Irregular Webcomic! has done a couple of xkcd pastiches. This one refers to the various "My Hobby" strips, geohashing, having a ball pit in your apartment, and someone announcing they're "from the internet".
Referenced By / xkcd