VNN may refer to:
Republic of Vietnam Navy, the navy of the former country of South Vietnam Vanguard News Network, a Neo-Nazi and white supremacist website Votorantim Novos Negócios, Brazilian private equity firm Volksnationalisten Nederland ("People's Nationalists Netherlands"), former Dutch political party Vought News Network (VNN): Seven on 7 with Cameron Coleman, a 2021 promotional web series Viral nervous necrosis, fish disease caused by viruses in the genus Betanodavirus
See also VNN1 and VNN2, human genes encoding proteins of the Vanin family of proteins