Felix Riebl is a singer, songwriter, and composer based in Melbourne. He is the co-founder, band leader and principal songwriter of the internationally acclaimed band The Cat Empire, who have made multi-platinum albums, and are the 2006 winner of the World Music Aria Award for their album Cities.

The Cat Empire are an Australian jazz/funk band, formed in Melbourne, Victoria, in 1999. For most of the band's duration, the core members were Felix Riebl, Harry James Angus, Will Hull-Brown (drums), Jamshid "Jumps" Khadiwhala, Ollie McGill and Ryan Monro. Monro retired from the band in March 2021, while Angus, Hull-Brown and Khadiwhala all left in April 2022. They are often supplemented by The Empire Horns, a brass duo composed of Ross Irwin (trumpet) and Kieran Conrau (trombone), among others. Their sound is a fusion of jazz, funk, ska, and rock with heavy Latin influences.