Justin Lee Bartha is an American actor. In film, Bartha has played Riley Poole in the National Treasure film series and Doug Billings in The Hangover trilogy. His television roles include David Sawyer in the NBC comedy series The New Normal as well as Colin Morrello in the CBS All Access legal and political drama The Good Fight.

The National Treasure franchise consists of American historical fiction action-adventures, including two released theatrical films, a prequel book series, and a television series set 20 years after the films. Future installments, notably a third film, have been under consideration for many years. The plot of the films and books centers around the Gates family – treasure hunters who search for and preserve lost valuables from the history of the United States of America – while the TV series references this background and features some common characters.