The 6th Critics' Choice Documentary Awards were presented on November 14, 2021 at the BRIC in Brooklyn, New York, honoring the finest achievements in documentary filmmaking and non-fiction television. It was hosted by Roy Wood Jr.
Ascension and Summer of Soul (...Or, When the Revolution Could Not Be Televised) led the nominations with six each with the latter winning all of its nominations.
The nominations were announced on October 18, 2021.