Billy Kennedy is a fictional character from the Australian soap opera Neighbours, played by Jesse Spencer. He made his first appearance on 27 September 1994, arriving in Ramsay Street with his family. He departed on 5 April 2000, but made a small cameo for the show's 20th anniversary episode broadcast on 27 July 2005, and for the show's then final episode on 28 July 2022.

Jesse Gordon Spencer is an Australian American actor and musician. He is known for his roles as Billy Kennedy on the Australian soap opera Neighbours (1994–2022), for which he was nominated for two Logie Awards, Dr. Robert Chase on the American medical drama House (2004–2012) and Captain Matthew Casey on the American drama Chicago Fire (2012–2024).