'''Green hat''' may refer to:
* Green hat, in de Bono's ''Six Thinking Hats'' * Green hat, an ecclesiastical hat for a bishop * Green hat, a Chinese term for cuckold * ''Green Hat'', a 2004 film * Green Hat Films, a film company of Todd Phillips * ''The Green Hat (novel)'', by Michael Arlen, 1924 **''The Green Hat'' (play)
==See also== * Green beret (disambiguation)
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