Mad as a hatter (disambiguation)
# Mad as a hatter (disambiguation)

Mad as a hatter is a colloquial English phrase suggesting insanity.

Mad as a hatter may also refer to:

* "Mad as a Hatter", an episode of Batman: The Animated Series
* "Mad as a Hatter", an episode of The Real Housewives of Dallas (season 1)
* "Mad as a Hatter", an episode of Ladies of London
* Mad As A Hatter (EP), by Def Wish Cast, 1993, and a track on the EP
* Mad as a Hatter, an album by Shadowland, 1996
* "Mad as a hatter", part of mnemonic for features of anticholinergic syndrome
