Tamaz (Thomas) Valeryanovich Gamkrelidze (Georgian: თამაზ ვალერიანის ძე გამყრელიძე; Russian: Тама́з Валериа́нович Гамкрели́дзе) (born 23 October 1929) is a distinguished Georgian linguist, orientalist public benefactor and Hittitologist, Academician (since 1974) and President (since February, 2005) of the Georgian Academy of Sciences (GAS), Doctor of Sciences (1963), Professor (1964).
Gamkrelidze was born in Kutaisi, Georgian SSR. His brother Revaz Gamkrelidze is also an Academician, a famous mathematician.
Tamaz Gamkrelidze graduated from the Faculty of Oriental Studies of the Tbilisi State University (TSU) in 1952. Since 1964 Gamkrelidze has been a professor of this university, and since 1966 the Head of the Chair of Structural and Applied Linguistics. In 1973-2006 he was a Director of the Tsereteli Institute of Oriental Studies (Tbilisi). He is the author of many outstanding works in the fields of Indo-European linguistics, Ancient languages, Theoretical linguistics, Structural and Applied Linguistics and Kartvelology. He is a leading proponent of the glottalic theory of Proto-Indo-European consonants.