Alex Winter (born July 17, 1965) is an actor, director and film writer, originally from Great Britain but raised in the USA. He is perhaps most recognizable as the blonde-haired, air-guitar-playing Bill S. Preston Esquire from Bill & Ted's Excellent Adventure.

Born in London, England, Alex Winter trained as a dancer as a child, that being the profession of his parents. His family then relocated to Missouri. He studied Film at college in New York City and starred in a number of plays whilst still a student.

His first major role as an actor was in the cult vampire movie The Lost Boys in 1987 when he was aged twenty-two. Two years later he starred alongside Keanu Reeves in the comedy Bill & Ted's Excellent Adventure as well as the sequel Bill & Ted's Bogus Journey. He also provided the voice for one of the animated television series spin-offs, as did Reeves.

Alex Winter has mainly worked behind the scenes in film since his role in the Bill & Ted movies. In 1993 he co-wrote and co-directed the comedy Freaked, and six-years later he wrote and directed Fever . Additionally he has directed music videos and television commercials.

He is married with a son and works in both his native Britain as well as the USA.