The British Independent Film Award for Best Documentary is an annual award given by the British Independent Film Awards (BIFA) to recognize the best documentary.
The award was first presented in the 2003 ceremony, with the film Bodysong, directed by Simon Pummell and Janine Marmot, being the first recipient of the award.
Senna and For Sama have won both this award and the BAFTA Award for Best Documentary, while The Imposter, Marley, 20,000 Days on Earth, Virunga, Amy, Notes on Blindness, Diego Maradona, Cow, and ', all have been nominated for both awards.