Call of Duty: Modern Warfare III is a 2023 first-person shooter game developed by Sledgehammer Games and published by Activision. It is the twentieth main installment of the Call of Duty series and is the third entry in the rebooted Modern Warfare sub-series, following Call of Duty: Modern Warfare II (2022). Set in 2023, Modern Warfare III's single-player story follows special forces unit Task Force 141 as they pursue Vladimir Makarov, a Russian ultranationalist and terrorist planning to trigger a third World War. The game also includes a multiplayer component and a cooperative open world Zombies mode, co-created by Black Ops sub-series developer Treyarch.
After wrapping development on Call of Duty: Vanguard (2021), Sledgehammer Games were assigned by Activision to develop an expansion pack for Modern Warfare II, which changed to a full, standalone release in the Call of Duty series. After several leaks in early-to-mid 2023, Modern Warfare III was officially revealed in August 2023 via an in-game event in Call of Duty: Warzone. The game was released on November 10, 2023, for PlayStation 4, PlayStation 5, Windows, Xbox One, and Xbox Series X/S.
Upon release, Modern Warfare III received mixed reviews, with criticism for its campaign. It became the second best-selling title of 2023 in the United States, behind Hogwarts Legacy. A sequel, developed by Infinity Ward and titled Call of Duty: Modern Warfare 4, was released on October 23, 2026.