Vexatious may refer to:
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Frivolous or vexatious, a legal term
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Vexatious litigation
Vexatious litigation is legal action which is brought solely to harass or subdue an adversary. It may take the form of a primary frivolous lawsuit or may be the repetitive, burdensome, and unwarranted filing of meritless motions in a matter whic ...
, a legal action brought solely to harass someone
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Vexatious requester, a term used for a certain class of requestor that can be denied under the UK Freedom of Information Act
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Vexatious (horse), an American Thoroughbred racehorse
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