Alexander Dyachenko was born in Leningrad, Russian SFSR, Soviet Union in southern Saint Petersburg, Russia.

In 1998, Alexander left his job and moved to the U.S. where he received an actor's education, training in Los Angeles under the teacher Milton Katselos.

In year 2011, Dyachenko gave his first Bollywood appearance in 7 Khoon Maaf (an Indian Hindi film directed by Vishal Bhardwaj and produced by Ronnie Screwvala).

He played the role of Nikolai Vronsky, the fourth husband of Susanna Anna-Marie Johannes (Priyanka Chopra) who was actually as a Russian spy leading a double life.

His role and performance was quite appreciated in Hindi Cinema and the movie made good business at box office.