Best Free Documentaries to Stream in 2026

Expand your horizons with these incredible free documentaries available to stream right now. From nature docs to true crime, science to history.

Best Free Documentaries to Stream

Nature & Science

• Our Planet — Stunning nature documentary
• Cosmos — Neil deGrasse Tyson explores the universe
• Planet Earth series — David Attenborough's masterpiece

True Crime

• Making a Murderer
• The Staircase
• Tiger King

Social & Political

• 13th — Ava DuVernay's examination of the US prison system
• The Social Dilemma — Big tech's impact on society

Browse our documentary collection for more free documentaries.