Rhys Kosakowski (born 18 October 1994) was one of the four original Australian boys to share the lead in Billy Elliot the Musical. Kosakowski has been a dancer since the age of 5, having performed with the Queensland Ballet Company in their touring production of the Nutcracker. 
 
Before Billy, he attended St Philip’s Christian College in Newcastle, where he was a school leader. Kosakowski’s mother, Allison, was a ballet dancer and his father works in the coal industry in Newcastle. People who know Kosakowski describe him as ‘full of energy’ and a ‘fantastic young performer’.
 
“My mom put me in jazz and tap lessons at a really young age, when I was maybe 6 or 7,” Kosakowski explains of his haphazard journey into the world of ballet. “It was more like a fun, interactive kind of thing. But as I grew older I took an interest mainly in jazz and contemporary dance. My jazz teacher at the time said to me ‘If you really want to pursue jazz as a future, then you have to do ballet class.’ Well, I was about 12 at the time and I wasn’t really into ballet at all but taking classes kind of opened my mind up to it a little bit. And then as I started to audition for Billy Elliott, I had to send in a ballet class video to audition. So that’s how ballet started for me. And then after I got the part of Billy, ballet just took off for me and that’s how I fell in love with it.”
 
In 2012, Rhys became a member of Houston Ballet II, which is Houston Ballet’s second company and is a part of the Houston Ballet Academy. Rhys was then promoted to the main company of the Houston Ballet in 2014, and is still a member of the company as of 2016.
 
Rhys is also becoming more and more in demand as a model and has aspirations of acting at some point.