Alexei Kornienko (Russian: Алексей Корниенко, born May 5, 1954 in Moscow) is an Austrian conductor and pianist of Russian descent.
Kornienko's musical education started at the age of 5. After musical studies in Kharkov and in Kiev Kornienko entered the Moscow P.I. Tchaikovsky Conservatory in 1972 to study in the piano class of Yakov Zak. In 1978, after graduating from the Conservatory, he became a piano tutor at the Kharkov Institute of Arts where he simultaneously studied conducting under the guidance of Vakhtang Jordania.
Between 1981 and 1983, Kornienko completed his apprenticeship training at the P.I. Tchaikovsky Conservatory in the class of Vera Gornostayeva. The very same year, he became a laureate of The First All-Union Rachmaninov Competition for pianists. From 1986 to 1990 Kornienko worked as a tutor of the Department of Special Piano at the P.I. Tchaikovsky Conservatory.
In 1990 he moved to live in Austria, and since then he has worked as a Professor of Piano, Chamber Music and Conducting at the Conservatory of Carinthia in Klagenfurt.
Alexei Kornienko is a co-founder of the chamber orchestra Collegium Musicum Carinthia. Together with his wife, violinist Elena Denisova, Alexei Kornienko initiated the founding of the Austrian Gustav Mahler Music Society, and the Gustav-Mahler-Ensemble was established under the Society's aegis.
In 2002 he facilitated the well-known annual Woerthersee Classics Festival in Klagenfurt and became the festival's artistic director.
In 2006, in collaboration with his wife, he recorded Wien um 1900 ("Vienna around 1900"), a CD of original violin music by Robert Fuchs, Pavel Singer and Alexander von Zemlinsky, which was issued by Gramola Vienna and brought them international recognition.