Valentin Afanasyevich Koptyug (Russian: Валентин Афанасьевич Коптюг; June 9, 1931 – January 10, 1997) was a Soviet Belarusian scientist, specializing in physical and organic chemistry.

When young Koptyug was studying in school, his family had to evacuate because of Great Patriotic War.

In 1949 he finished school in Samarkand and graduated from D. Mendeleev University of Chemical Technology of Russia in 1954 in Moscow.

[3] Koptyug made a huge contribution in development of synthetic, physical and applied chemistry.

Also, he founded some large scientific schools in the fields of organic chemistry and chemoinformatics.