Louis Diamond "Lou" Phillips is a Filipino-born American actor and director. His breakthrough came in 1987 when he starred as Ritchie Valens in the biographical drama film La Bamba. Phillips was nominated for a Golden Globe Award and won an Independent Spirit Award for his portrayal of Angel David Guzman in the inner-city high school drama Stand and Deliver. He made his Broadway debut with the 1996 revival of The King and I, earning a Tony Award nomination for his portrayal of King Mongkut of Siam.
For Disney, he voices Victor Delgado in Elena of Avalor, Surak in The Lion Guard, and Chief Bill Bayani Firebuds. He also directed the Agents of S.H.I.E.L.D. episode "The Other Thing".