Blood Oath, known in some countries as Prisoners of the Sun, is a 1990 Australian drama film directed by Stephen Wallace and co-written by Denis Whitburn and Brian A. Williams. The film stars Bryan Brown, George Takei, Terry O'Quinn, John Bach, John Clarke, Deborah Kara Unger, John Polson, Nicholas Eadie, David Argue and Ray Barrett. The film is based on the real-life trial of Japanese soldiers for war crimes committed against Allied prisoners of war on the island of Ambon, in the Netherlands East Indies (Indonesia), such as the Laha massacre of 1942.

The film was the first film debut for both Russell Crowe and Jason Donovan, in minor roles. It was nominated for several AFI Awards in 1990, including "Best Film". It won the AFI Awards for "Best Achievement in Sound" and "Best Achievement in Costume Design".