Total War: Warhammer III is a turn-based strategy and real-time tactics video game developed by Creative Assembly and published by Sega. It is part of the Total War series, and the third to be set in Games Workshop's Warhammer Fantasy fictional universe (following 2016's Total War: Warhammer and 2017's Total War: Warhammer II). The game was announced on February 3, 2021 and was released on February 17, 2022. It received positive reviews from critics.

Like its predecessors, Total War: Warhammer III features turn-based strategy and real-time tactics gameplay similar to other games in the Total War series.

In the campaign, players move armies around the map and manage settlements in a turn-based manner. Players engage in diplomacy with, and fight against, AI-controlled factions. When armies meet, they battle in real-time. The game will also have a custom battles mode where players can create customised real-time battles, as well as online multiplayer battles. Those who own races from the first two games will have the same races unlocked for multiplayer in the third game; a combined world map, named "Immortal Empires", similar to the "Mortal Empires" campaign in Total War: Warhammer II for owners of the first two games. Immortal Empires released as a Beta on August 23, 2022 with patch 2.0.

The races announced with the game are the human civilizations of Grand Cathay (based on Imperial China) and Kislev (based on Medieval Russia), and five Chaos factions - four devoted to each of the Chaos Gods (Khorne, Tzeentch, Nurgle, and Slaanesh), and the Daemons of Chaos, led by a Daemon Prince that can be customized by earning "Daemonic Glory" through the course of the campaign. Another race, the Ogre Kingdoms,  was made available to "early adopters" (those who pre-purchased the game before release, or purchased within the first week after release).

The main campaign takes place within the Realm of Chaos, said to be the source of all magic in the Warhammer Fantasy setting. Game director Ian Roxburgh has said the campaign map will be "twice the size" of the Eye of the Vortex campaign map that appeared in Total War: Warhammer II.