Xenophon (Ancient Greek: Ξενοφῶν, Xenophōn; c. 430 – 354 BC), son of Gryllus, of the deme Erchia of Athens, also known as Xenophon of Athens, was a Greek historian, soldier, mercenary, philosopher and a contemporary and admirer of Socrates. He is known for his writings on the history of his own times, the 4th century BC, preserving the sayings of Socrates, and descriptions of life in ancient Greece and the Persian Empire.

Xenophon's birth date is uncertain, but most scholars agree that he was born around 431 BC near the city of Athens. Xenophon was born into the ranks of the upper classes, thus granting him access to certain privileges of the aristocracy of ancient Attica. While a young man, Xenophon participated in the expedition led by Cyrus the Younger against his older brother, king Artaxerxes II of Persia, in 401 BC. Xenophon writes that he had asked the veteran Socrates for advice on whether to go with Cyrus, and that Socrates referred him to the divinely inspired Delphic oracle. Xenophon's query to the oracle, however, was not whether or not to accept Cyrus' invitation, but "to which of the gods he must pray and do sacrifice, so that he might best accomplish his intended journey and return in safety, with good fortune". The oracle answered his question and told him to which gods to pray and sacrifice. When Xenophon returned to Athens and told Socrates of the oracle's advice, Socrates chastised him for asking so disingenuous a question.

Xenophon Zolotas (Greek: Ξενοφών Ζολώτας, 26 March 1904 – 10 June 2004), was a Greek economist and served as an interim non-party Prime Minister of Greece.

Born in Athens in 1904, Zolotas studied economics at the University of Athens, and later studied in Leipzig and Paris. He came from a wealthy family of goldsmiths with roots in pre-revolutionary Russia. In 1928 he became Professor of Economics at Athens University and at Aristotle University of Thessaloniki, a post he held until 1968, when he resigned in protest at the military regime which had come to power in 1967. He was a member of the Board of Directors of UNRRA in 1946 and held senior posts in the International Monetary Fund and other international organisations in 1946 and 1981.

Zolotas was director of the Bank of Greece in 1944–1945, 1955–1967 (when he resigned in protest at the regime), and 1974–1981. He published many works on Greek and international economic topics. He was a Keynesian, and was active in socialist circles with his close friend, Professor Angelos Angelopoulos. He is also famous for demonstrating the contribution of Greek language to the English vocabulary by making English speeches, as he said, "using with the exception of articles and prepositions only Greek words", to foreign audiences.