The Matrix 4 is an upcoming American science fiction action film and the fourth installment in The Matrix franchise. The film is co-written and directed by Lana Wachowski, one of the two Wachowskis who directed the previous three films. Keanu Reeves and Carrie-Anne Moss reprise their roles in the film. The film will be a joint production by Warner Bros. Pictures and Village Roadshow and is scheduled to be released on May 21, 2021.

Additionally, Yahya Abdul-Mateen II, Neil Patrick Harris, Jessica Henwick, Jonathan Groff, Max Riemelt, Toby Onwumere, Eréndira Ibarra, Priyanka Chopra, Andrew Caldwell and Brian J. Smith have been cast in undisclosed roles.

While making the Matrix films, the Wachowskis told their close collaborators that at that time they had no intention of making another one after The Matrix Revolutions.[2][3][4][5] In February 2015, in interviews promoting Jupiter Ascending, Lilly Wachowski called a return to The Matrix a "particularly repelling idea in these times", noting the studios' tendency to green-light sequels, reboots, and adaptations over original material,[6] while Lana Wachowski, addressing rumors about a potential reboot, said they had not heard anything, but she believed the studio might be looking to replace them.[7]

In March 2017, The Hollywood Reporter wrote that Warner Bros. was in early stages of developing a relaunch of the franchise, with Zak Penn in talks to write a treatment, and interest in getting Michael B. Jordan attached to star. Neither of the Wachowskis were involved at that stage, although the studio had hoped for their blessing.[8] The notion of a reboot or remake was denounced by Penn, and ideas for stories set in the already established universe were explored, including, reportedly, a prequel film about a young Morpheus.[9][8][10] In March 2018, Penn said he is working on a revival of the franchise and teased the possibility of an expanded universe.[11] Penn clarified in October 2019 that he had been working on one of two Matrix projects at Warner Bros., and that his work was separate from the planned film.[12]