Which author wrote the novel 'The Master and Margarita'?

The author who wrote the novel 'The Master and Margarita' was Mikhail Bulgakov.

Bulgakov began writing the novel in 1928 and continued revising it until shortly before his death in 1940. The story combines satire, fantasy, romance, and Christian philosophy, following Satan—appearing as Professor Woland—and his strange entourage through 1930s Moscow. A second storyline retells the meeting of Pontius Pilate and Yeshua.

The novel was published posthumously and initially appeared in a censored form in the Soviet magazine Moskva in 1966–1967. The first book edition was published in Paris in 1967, while an uncensored Russian edition followed later. Bulgakov's experiences with censorship and literary repression strongly influenced the novel.

A common mix-up is confusing Bulgakov with the fictional Master, the author-character within the story. The Master is partly an autobiographical figure, but Bulgakov is the real-world author of the novel.