Raviv Ullman (Hebrew: רביב אולמן), known by his stage name Ricky Ullman, (born January 24, 1986 in Eilat, Israel), is an Israeli-born American actor. He is perhaps best known for playing Phil Diffy, the main character in the Disney Channel television series Phil of the Future.

Raviv Ullman moved to Fairfield, Connecticut, with his parents from Israel shortly after his first birthday. His first professional stage role as Louis in the national touring company of King and I, The (1956). Ricky has played both musical and dramatic roles in various regional theater productions including "Dead End" at the Ahmanson Theater in Los Angeles, California. He received a 1998-1999 Best Actor award nomination from the Connecticut Critics Circle Awards for his portrayal of Stanley in "A Rosen by Any Other Name." He stars in the Disney Channel's television series "Phil of the Future" (2004) as well as The Walt Disney Company's made-for-TV movie Pixel Perfect (2004/I) (TV), ABC Family's Searching for David's Heart (2004) (TV), and NBC's Growing Up Brady (2000) (TV). He has guest-starred on "Law & Order: Special Victims Unit" (1999) and "That's So Raven" (2003). His feature films include Big Bad Swim, The (2006); Boys of Sunset Ridge, The (2001), starring John Heard, the late Pat Morita, and Burt Young; and the independent film Crossfire (1998). In his spare time, Ricky enjoys playing guitar, percussion, dancing, and volunteering with the charity organization TAP (Teen AIDS Prevention). Ricky currently resides in Los Angeles, California. He has a younger sister, Tali, and a younger brother, Nadav.