Have or having may refer to:
- the concept of ownership
- any concept of possession
- the English verb "to have" is used:
- to express possession linguistically, in a broad sense
- as an auxiliary verb
- in constructions such as have something done
- Having (album), a 2006 album by the band Trespassers William
- Having (SQL), a clause in the SQL programming-language
- Having (inlet), on Rügen island in Germany
- HAVE, a United States military code-word designating projects developed by the Air Force Systems Command, such as the Lockheed Have Blue
- Have, a grammatically incorrect variation of the Latin salute Ave
- Peter Have, Danish politician
- Stefan Haves, American clown and director