Alexander Ross Winter (born July 17, 1965) is an English/American actor, director, and film writer, known for his role as "Bill S. Preston" in the 1988 film Bill & Ted's Excellent Adventure and its sequels and spin-offs.

Alex Winter was born in London to two modern dancers, and he himself received dance training as a child. While still a youth, he relocated with his family to St. Louis, Missouri, where he studied improvisation. He made his Broadway debut in "The King and I" and spent the next several years on stage while studying film (writing and editing) at New York University. Upon graduating, he took his first major film role, in the cult vampire movie Lost Boys, The (1987). But it was two years later that he landed the role for which he's most famous for - that of Bill S. Preston, Esq., who with his buddy Ted "Theodore" Logan (Keanu Reeves) traveled through time in _Bill and Ted's Excellent Adventure (1989)_. The film was a huge success, spawning two television series and a well-received sequel, _Bill and Ted's Bogus Journey (1991)_. In 1993, Winter co-wrote, co-directed, and starred in the outrageous, critically praised comedy Freaked (1993). He currently divides his time between New York and London, where he directs television commercials and music videos. In 1999, he wrote and directed the critically acclaimed thriller Fever (1999), which made its debut at the Cannes Film Festival.