The Last Warrior: Emissary of Darkness (Russian: Последний богатырь: Посланник тьмы, lit. 'The Last Bogatyr: A Messenger of Darkness'; also known as The Last Warrior 3) is a 2021 Russian fantasy comedy film, a sequel to The Last Warrior: Root of Evil (2021) and is the third and final installment in The Last Warrior series.

The film is directed by Dmitry Dyachenko and stars Viktor Khorinyak, Mila Sivatskaya, Ekaterina Vilkova, Elena Yakovleva, Konstantin Lavronenko, Sergey Burunov and Philipp Kirkorov.

It was theatrically released in Russian by Walt Disney Studios on 23 December 2021. The film was also shown in IMAX cinemas

As of 9 January 2022, the film became the 9th-highest-grossing local-language release of all time in Russia, surpassing The Last Warrior with 1.88 billion rubles ($25.5 million). In Russia, the film holds the 9th place biggest box-office audiences. This was Disney Russia's fourth and last film produced specifically for the Russian market, with the previous being The Book of Masters (2009), The Last Warrior (2017), and The Last Warrior: Root of Evil (2021). It is the most recent Disney film released in Russia, as the company paused its business there in the wake of the 2022 Russian invasion of Ukraine.