Buoyancy is a 2019 Australian drama film directed by Rodd Rathjen. It was selected as the Australian entry for the Best International Feature Film at the 92nd Academy Awards, but it was not nominated.
Inspired by actual events, a 14-year-old Cambodian boy becomes a victim of human trafficking when he is enslaved on a Thai fishing trawler.
The film's premiere took place at the 2019 Berlin International Film Festival.
Critic Paul O'Callaghan assessed the film as a "terse minimalist thriller" about slavery in southeast Asia. Screen Dailys Sarah Ward credited Heng with "a captivating lead" with "a rawness to his performance".
Buoyancy has an approval rating of 97% on review aggregator website Rotten Tomatoes, based on 35 reviews, and an average rating of 7.9/10. The website's critical consensus states: "Grueling but powerful, Buoyancy finds grim urgency in its portrayal of a young man's horrific captivity and fight for human dignity". Metacritic assigned the film a weighted average score of 77 out of 100, based on 8 critics, indicating "generally favorable reviews".