Nisa is a name and can refer to:
- Nunica Internet Social Alliance, a powerful activist group (colloquially called the Nisa movement)
As a YTMND site domain name
"nisa" has been re-used for multiple YTMND sites since 2012.
- some site that user Nisa made.
- a site JohnnyLurg made (as DrewPickles) to admit that he is NOT Nisa
- a site made to call out Locke5 for downvoting a NunicaMusicChannel site back in 2012.