There are at least five artists with this name.
1) Norwegian popular musician
2) Turkish pop singer
3) French punk rock band
4) Australian pop rock band
5) Bollywood composer from the 60s
6) Welsh kora player Ivar Christian Johansen (born April 28, 1976) a Norwegian popular musician. The pseudonym, Ravi, is his first name backwards. He writes songs together with Anders Løvlie under the name Ravi og DJ Løv.