The Princess Diaries 2: Royal Engagement is a 2004 American romantic comedy film directed by Garry Marshall. Produced by Walt Disney Pictures, it is the sequel to 2001's The Princess Diaries. Unlike the first film, it is not based on any existing book, and has no relation to the second installment in the book series, The Princess Diaries, Volume II: Princess in the Spotlight. In the film, Mia Thermopolis learns that before she can succeed her grandmother as queen of Genovia, she must marry or else relinquish the throne.

Most of the cast returned from the first film, including Julie Andrews, Anne Hathaway, Héctor Elizondo, Heather Matarazzo, and Larry Miller. Garry Marshall returned to direct and Debra Martin Chase and Whitney Houston to produce. New characters include Viscount Mabrey (John Rhys-Davies), Lord Nicholas Devereaux (Chris Pine, in his film debut), and Andrew Jacoby (Callum Blue).

The film grossed over $134 million worldwide and received mixed reviews from critics. A sequel is currently in development.