Krastyo Kotev Krastev (Bulgarian: Кръстьо Котев Кръстев [ˈkrəstjo ˈkɔtɛf ˈkrəstɛf]; also transliterated as Krǎstjo Krǎstev, Krustyo Krustev, etc.) (31 May 1866 – 15 April 1919), popularly known as Dr. Krastev (д-р Кръстев), was a Bulgarian writer, translator, philosopher and public figure most notable as Bulgaria's first professional literary critic. Krastev was an influential member of the modernist Misal ("Thought") circle, a leading collaboration of writers that aimed to revolutionize Bulgarian literature and introduce the modern ideas of European literature and philosophy to the country.
Krastyo Krastev was born in the Ottoman town of Pirot (then part of the empire's Niš district in Danube Province), today in eastern Serbia. He began his education in his hometown, where he finished a Bulgarian progymnasium (junior high school). Along with a wave of Bulgarian refugees, his family had to move to the newly established Principality of Bulgaria in 1878, as Pirot was ceded to the Principality of Serbia by the Treaty of Berlin. Krastev's family settled in the capital Sofia, where he enrolled at the First Sofia High School for Boys.
Owing to the high school curriculum's focus on classical languages, he studied Ancient Greek along with French, German, Russian, shorthand and other subjects. While still at high school, Krastev worked as a shorthand writer for the National Assembly of Bulgaria. Krastev finished high school in 1885 and in 1888 graduated in philosophy from the University of Leipzig in the German Empire, where he wrote a doctorate under Wilhelm Wundt, the father of experimental psychology. His doctorate discussed Hermann Lotze's metaphysical concept of the soul. Krastev was engaged in literary criticism while still in Leipzig, where he wrote a study on Ivan Vazov's poetical works.