William H. "Billy" May (30 August 1953 – 31 December 2009) was an American-born Australian artistic director, theatre producer and composer. May was best known for creating the Walking with Dinosaurs – The Live Experience, an arena show based on the BBC documentary television mini-series, Walking with Dinosaurs. The production, which debuted in 2007 and features 15 lifelike dinosaurs designed by May, has been called "one of the largest and most acclaimed shows to come out of Australia."