Alexander Diyanov was born in Sursk.
In 2012 he graduated from the Nizhegorodsky State Conservatory where he studied with Professor Andrei Sedov.
From 2006 and 2007 he worked for the Penzensky Government Symphonic Kapella. From March 2008 to October 2010 he was a soloist of the Nizhegorodsky State Theatre of Opera and Ballet.
In 2009, together with the Nizhny Novgorod Conservatory and the Nizhegorodsky Philharmonic, he performed the part of Yury in a production of Tchaikovsky's opera The Enchantress, which was conducted by Alexander Skulsky.
From 2010 to 2015 he was a soloist of the Astrakhan State Theatre of Opera and Ballet.
He has given concerts in Russia and abroad as a soloist of the Penzensky Symphonic Kapella (2006–2007), in Astrakhan and the Astrakhan Region, in Nizhny Novgorod (2010), Makhachkala and Baku as a member of the opera company of the Astrakhan State Theatre of Opera and Ballet.
In September 2015 he became a soloist of the Primorsky Opera and Ballet Theatre. Since 2016 he has been a member of the Opera Company of the Primorsky Stage of the Mariinsky Theatre.
Repertoire at the Primorsky Stage of the Mariinsky Theatre includes:
Jose (Carmen, G. Bizet);
Cavaradossi (Tosca, G. Puccini);
Duke of Mantua (Rigoletto, G. Verdi);
Macduff (Macbeth, G. Verdi);
Alfredo Germont (Traviata, G. Verdi);
Herman (The Queen of Spades, P. Tchaikovsky);
Vakula the blacksmith (Christmas Eve, N. Rimsky-Korsakov);
Ivan Lykov (The Tsar’s Bride, N. Rimsky-Korsakov);
The Prince (The Love for Three Oranges, S. Prokofiev);
Master of Ceremonies (War and Peace, S. Prokofiev).
Repertoire also includes:
Lensky (Eugene Onegin, P. Tchaikovsky), Vakula (Cherevichki, P. Tchaikovsky), Prince Yury (The Enchantress, P. Tchaikovsky), Vladimir Igorevich (Prince Igor, A. Borodin), Pinkerton (Madama Butterfly, G. Puccini), Otello (Otello, G. Verdi), Canio (Pagliacci, R. Leoncavallo), The Pretender (Boris Godunov, M. Musorgsky), Sadko (Sadko, N. Rimsky-Korsakov), Vaudémont (Iolanta, P. Tchaikovsky, concert performance), Jakob Glok (The Fiery Angel, S. Prokofiev, concert performance).
Singer's repertoire includes tenor's roles in Carmina Burana Cantata (K. Orf), The Bells Choral Symphony (S. Rachmaninov), Das Lied von der Erde Symphony (G. Mahler), Requiem (W.-A. Mozart).