The third season of the American science fiction dystopian television series Westworld (subtitled The New World) premiered on HBO on March 15, 2020, and concluded on May 3, 2020, consisting of eight episodes.

The television series was created by Jonathan Nolan and Lisa Joy, and it is based on the 1973 film of the same name, written and directed by Michael Crichton. The third season stars an ensemble cast led by Evan Rachel Wood, Thandie Newton, Jeffrey Wright, Tessa Thompson, newcomer Aaron Paul, and Ed Harris. Vincent Cassel is introduced as the main antagonist.

The third season initially received positive reviews from critics, though reception became mixed during the second half. Reviews praised the performances, visuals and change in tone from the first two seasons, but criticized the story, dialogue and pacing, as well as the perceived lack of thematic depth.