Vexatious may refer to:
*
Frivolous or vexatious, a legal term
*
Vexatious litigation, a legal action brought solely to harass someone
*
Vexatious requester, a term used for a certain class of requestor that can be denied under the UK Freedom of Information Act
*
Vexatious (horse), an American Thoroughbred racehorse
{{Disambiguation