Which may refer to: * a relative pronoun * an

interrogative word An interrogative word or question word is a function word used to ask a question, such as ''what, which'', ''when'', ''where'', ''who, whom, whose'', ''why'', ''whether'' and ''how''. They are sometimes called wh-words, because in English most o ...

* which (command), an operating system command * Which?, a UK charity and its magazine

See also