An affair between the second in line to Britain's throne and the princess of the feuding Irish spells doom for the young lovers.
- Year: 2006
- Country: Czech Republic, Germany, Ireland, Switzerland, United Kingdom, United States of America
- Genre: Drama, Romance, Adventure, Action
- Studio: QI Quality International GmbH Co. KG, Epsilon Motion Pictures, Franchise Pictures, Scott Free Productions, World 2000 Entertainment, Stillking Films, ApolloProMedia GmbH & Co. 1. Filmproduktion KG (I), MFF (Tristan & Isolde) Limited, 20th Century Fox, Mandate International
- Keyword: in love with enemy, castle, lovers, hostility, revenge, murder, knight, battle, middle ages, star crossed lovers, 6th century
- Director: Kevin Reynolds
- Cast: James Franco, Sophia Myles, Rufus Sewell, David O'Hara, Mark Strong, Henry Cavill