There are two artists with the moniker of NIVA.

Stockholm's Christian Niva makes dreamy bedroom pop that borrows elements from modern dance music.
http://facebook.com/nivamusic
http://niva.bandcamp.com
http://www.soundcloud.com/nivamusic

Tony Niva is a Swedish AOR / Melodic Rock artist from Skövde/Skara. He made his debut album, NIVA - No Capitulation that was released in Japan 1994.
http://www.niva.se
https://www.facebook.com/nivasweden
https://twitter.com/nivasweden

Discography and more info are as follows:
NIVA - No Capitulation (1994)
NIVA - Gold From The Future (2011)
NIVA - Magnitude (2013)
NIVA - Atmospherical (2016) Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.