Sirena Irwin is an American voice director, casting director, and actress. Her career in animation casting and directing began in 2017 after a career as an actress in animation and a two-year mentorship with animation director, Andrea Romano. Her voice directing credits include the DreamWorks Animation series Jurassic World: Camp Cretaceous, the Nickelodeon series Baby Shark's Big Show! and the Cartoon Network series Apple & Onion. She got her B.A. from San Francisco State University in 1993.^[1]

As an actress, Irwin has voiced characters for animated series including the Nickelodeon television series SpongeBob SquarePants,^[2] its spinoff series Kamp Koral: SpongeBob's Under Years, Warner Bros. television series Batman: The Brave and the Bold, and DreamWorks Animation television series The Mighty Ones. She won a Broadway World Award for Best Actor in a Touring Production for her role as Lucy Ricardo in "I Love Lucy: Live on Stage".^[3][4][5]

Irwin founded Oh, Zeus!.^{[clarification needed]}