Cunt is an English language vulgarism most commonly used in offensive, although, as with all verbal profanities, some speakers regard it as merely informal or even a term of endearment. Calling someone a 'cunt' is generally considered extremely offensive in many countries.

Cunt is sometimes used as a nonspecific derogatory epithet in referring to either sex (in Australian English, specifically male; the Macquarie Dictionary defines cunt as "a despicable man"). Its usage as vulgar insult is, however, a relatively recent development, the earliest citation dating from 1929.[citation needed].

The term also has various other uses (see usage below).