Cowspiracy: The Sustainability Secret is a 2014 American documentary film produced and directed by Kip Andersen and Keegan Kuhn. The film explores the impact of animal agriculture on the environment—examining such environmental concerns as climate change, water use, deforestation, and ocean dead zones—and investigates the policies of several environmental organizations on the issue.

The film won the Audience Choice Award at the 2015 South African Eco Film Festival and the Best Foreign Film Award at the 12th annual Festival de films de Portneuf sur l'environnement. Cowspiracy has been criticized for asserting that animal agriculture is the primary source of greenhouse gas emissions and environmental destruction, with other sources assessing the impact as being less than is stated in the film.