Alfonsas Eidintas (born 4 January 1952 in Vaiguva, Kelmė District Municipality, Lithuania) is a historian, diplomat and novelist.

He went to serve as chief lecturer, docent, head of the Universal History Department, and Deputy Dean at that institution.

Eidintas entered the diplomatic service in 1993, serving as Lithuania's Ambassador to the United States.

He also served as Lithuania's Ambassador Extraordinary and Plenipotentiary to Canada, Mexico, Norway, Israel, Cyprus, Ethiopia, South Africa and Nigeria.

[3] He had authored over 20 books and at least 50 scientific articles about Lithuanian history and politics and published works of historic fiction: Ieškok Maskvos sfinkso ("In Search of the Moscow Sphinx"), Erelio sparnų dvelksmas, and Aukštai šaltos žvaigždės.