Renavi was a inhabited world once visited by Kor and Curzon Dax, where they caused a degree of mischief.

Years later, Kor asked Ezri Dax if she remembered "breaking into the Duke's harem on Renavi", which caused here to laugh and say, "How could I forget? It's one of Curzon's favorite memories..." (DS9: "Once More Unto the Breach")

This planet was only mentioned in dialogue.
According to Star Trek: Star Charts (p. 64), Renavi was located in the Beta Quadrant.