Valentin Alexandrovich Serov (Russian: Валенти́н Алекса́ндрович Серо́в; 19 January 1865 – 5 December 1911) was a Russian painter, and one of the premier portrait artists of his era.
Serov was born in Saint Petersburg, son of the Russian composer and music critic Alexander Serov, and his wife and former student Valentina Serova also a composer in her own right. Raised in a highly artistic milieu he was encouraged to pursue his talents by his parents and in his childhood he studied in Paris and Moscow under Ilya Repin and in the St. Petersburg Academy of Arts (1880–1885) under Pavel Chistyakov. Serov's early creativity was sparked by the realistic art of Repin and strict pedagogical system of Chistyakov. Further influences on Serov were the old master paintings he viewed in the museums of Russia and Western Europe, friendships with Mikhail Vrubel and (later) Konstantin Korovin.