Lorraine Frost (13 September 1892 – 10 February 1983) was an American silent film and theater actress. She was best known for her roles in The Light of Happiness (1916), Sinners (1920) and The Truth About Husbands (1920).
Frost started her career in theater around 1903 (aged 10), and was considered a child prodigy. She made her debut playing Nora in a theatrical adaption of A Little Princess.
She began working with Robert Mantell around 1905, and performed in a number of Shakespeare productions. Her most notable role in theater was Ophelia in Hamlet at age 16, which she was an understudy to Marie Booth Russel.
Her first role in film was in The Rivals, a short silent film in 1913, as Lydia Languish. After her marriage to Kenneth Webb she starred in multiple of his movies.
Frost had a sister, Leila Frost, who was also a child actress. Their mother traveled with the girls when they went on tour, acting as their governess. Frost took a brief break from theatre at age 15 to study in New York.
Frost married director Kenneth Webb. She continued to live in Manhattan, where she had a terrier named Lady.