Alexei Steblyanko (born 17 October 1950) is a Soviet and Russian operatic tenor and music teacher. He was born in Stavropol, Russian Soviet Federative Socialist Republic, Soviet Union. His father was a builder and his mother worked as a technical editor at a book publishing house.
Steblyanko attended Secondary School No. 2 and simultaneously studied at Music School No. 1 with the teacher and composer Nikolai Zinchenko. He graduated in bayan performance, continued vocal studies, and sang in the popular-music ensemble of the Officers' House. At the Stavropol Music College, he first studied choral conducting and later joined the class of Valentina Valyushko.
In 1976, he graduated from the Rimsky-Korsakov Leningrad State Conservatory, where he studied with N. A. Serval. From that year he performed at the S. M. Kirov Leningrad Theatre of Opera and Ballet, now the Mariinsky Theatre, singing its leading tenor roles. He began teaching at the Leningrad Conservatory in 1986 and became a professor in the Department of Solo Singing at the Herzen Russian State Pedagogical University.
In 1982, Steblyanko was invited to appear in La Scala's Milan production of Hector Berlioz's opera dilogy The Trojans. In 1991 he sang Grigory in Boris Godunov, Canio in Pagliacci, and Florestan in Fidelio at the Bavarian State Opera in Munich. His other appearances included opera houses in Bonn, Brussels, Amsterdam, Cologne, Stuttgart, Barcelona, Madrid, Wiesbaden, and Lausanne. He made his Karlsruhe debut as Hermann in Yuri Lyubimov's production of The Queen of Spades.
He took part in a concert performance of The Queen of Spades at Amsterdam's Concertgebouw under Valery Gergiev. At La Scala he made his debut as Aeneas in The Trojans, while his Royal Opera House, Covent Garden debut was as Jason in Medea. At these theatres he also sang leading roles in Il trovatore, Boris Godunov, and Prince Igor. He performed Pierre Bezukhov in War and Peace in a production presented jointly by the Mariinsky Theatre and the Metropolitan Opera.
His repertoire has also included Prince Vasily Golitsyn in Khovanshchina, Lensky in Eugene Onegin, Prince Vsevolod in The Legend of the Invisible City of Kitezh and the Maiden Fevroniya, Ishmael in Nabucco, Radamès in Aida, Don Alvaro in La forza del destino, Otello, Don José in Carmen, Samson in Samson and Delilah, Lohengrin, and Calaf in Turandot.
Steblyanko received third prize at the All-Union Glinka Vocal Competition in 1973. He was named Honored Artist of the Russian Soviet Federative Socialist Republic in 1983 and People's Artist of the Russian Soviet Federative Socialist Republic in 1989.