James Franco (Tristan)
Sophia Myles (Isolde)
Rufus Sewell (Marke)
David Patrick O'Hara (Donnchadh)
Mark Strong (Wictred)
Isobel Moynihan (Young Isolde)
Cheyenne Rushing (Lady Serafine)
Hans Martin-Stier (Kurseval)
Leo Gregory (Simon)
Gordon Truefitt (Tournament Judge)
Myles Taylor (Young Melot)
Jack Montgomery (Young Simon)
Philip O'Sullivan (Paddreggh)
Nevan Finegan (Tournament Crier)
Mirek Simunek (Pict Guard)
Jamie King (Anwick)
Richard Dillane (Aragon)
Winter Ave Zoli (Widseth's Sister)
David Fisher (Irish Soldier)
Jón Ólafsson (Coronation Priest)
Kevin Flood (Funeral Priest)
Wolfgang Muller (Rothgar)
Marek Vasut (Luther)
Thomas Morris (Kaye)
Dexter Fletcher (Orick)
Barbara Kodetova (Lady Marke)
Bronwen Bonner-Davies (Lady Aragon)
Todd Kramer (Widseth)
Graham Mullins (Morholt)
Thomas Sangster (Young Tristan)
Henry Cavill (Melot)
Bronagh Gallagher (Bragnae)
Ronan Vibert (Bodkin)
JB Blanc (Leon)
Lucy Russell (Edyth)