Count Alexander Ivanovich Rumyantsev (Russian: Александр Иванович Румянцев) (1677–1749) was an assistant of Peter the Great and father of Field Marshal Peter Rumyantsev-Zadunaisky. He came from the Rumyantsev family which, though little known and documented in the 17th century, later claimed descent from a prominent 14th-century boyar. This article incorporates text from a publication now in the public domain: Brockhaus and Efron Encyclopedic Dictionary (in Russian). 1906.