Twilight Watch is a fantasy novel by Russian writer Sergey Lukyanenko published in 2004. It is the sequel to Night Watch and Day Watch and the third part of a saga that continues with Last Watch and New Watch and concludes with Sixth Watch.

Sergei Vasilyevich Lukyanenko is a Russian science fiction and fantasy author, writing in Russian. His works often feature intense action-packed plots, interwoven with the moral dilemma of keeping one's humanity while being strong. Some of his works have been adapted into film productions, for which he wrote the screenplays.