Alden Ehrenreich first appeared in the Episode: "Wendigo" of the American dark fantasy drama television series ‘Supernatural’ in 2005. The following year, he made a brief appearance in the American procedural forensics crime drama television ‘CSI: Crime Scene Investigation.’ Ehrenreich made his big-screen debut in the 2009 drama film ‘Tetro’ directed by Francis Ford Coppola. The film received mostly positive reviews from critics. In 2010, he made an uncredited appearance in the drama film ‘Somewhere’ directed by Sofia Coppola. The year 2013 saw the release of the American romantic gothic fantasy film ‘Beautiful Creatures’ where Ehrenreich was seen playing the role of ‘Ethan Wate.’ Even though the film opened to mixed reviews, it failed to achieve success at the box office. Nevertheless, Ehrenreich earned the ‘Teen Choice Award’ nomination for his performance in the film. That same year, he also appeared in the American comedy-drama film ‘Blue Jasmine’ which was a major critical and commercial success.
In 2016, he starred as ‘Hobie Doyle’ in the comedy film ‘Hail, Caesar!’ directed by Joel Coen and Ethan Coen. The film received positive reviews from critics and was a financial success, grossing over $63.6 million against a budget of $22 million. Ehrenreich also received several award nominations including the ‘Chicago Film Critics Association Award,’ ‘Detroit Film Critics Society Award,’ and ‘Golden Schmoes Award’ nominations for his performance in the film. He was next seen playing the role of ‘Brandon Bartle’ in the 2017 American war film ‘The Yellow Birds’ directed by Alexandre Moors. The film received a mixed response from critics. The following year, he received the ‘Teen Choice Award’ nomination for his performance as ‘Han Solo’ in the American space Western film ‘Solo: A Star Wars Story’ directed by Ron Howard. Despite opening to positive reviews, the film was a commercial failure and was declared a box office bomb.
In 2020, he joined the main cast of the American science fiction drama series ‘Brave New World’ where he played the role of ‘John the Savage.’ The series was canceled after one season. He is all set to appear in the upcoming American thriller film ‘Cocaine Bear’ directed by Elizabeth Banks.