Timotheus, an Athenian general, died in Chalcis in 354 B. C. He was the son of the general Conon and a pupil of Isocrates. He was made a general in 378, and in 375 defeated a Spartan fleet near Alyzia. In consequence of his failure to come promptly to the relief of Corcyra, thereby endangering the loss of the island, he had to lay down his generalship and answer the charges brought against him. Though acquitted, he went in 372 to Asia, and entered the service of the king of Persia; but he returned to Athens and was sent on an expedition in support -of Ariobar-zanes, satrap of Phrygia. Seizing a favorable opportunity, he took possession of Samos for the Athenians, and secured for them a partial control of the Hellespont and the occupation of a large surrounding territory. Timo-theus was then appointed to a command including Macedonia, Thrace, and the Chersonese. With the aid of Macedonia he reduced Torone, Potidaea, Pydna, Methone, and various other cities belonging to the Olynthian confederacy, but was unsuccessful in the attack upon Amphip-olis. In 363-362 he proceeded against Cotys, king of Thrace, and to the defence of the Athenian possessions in the Chersonese, in which he is said to have been successful; but for some reason not now known he retired from his command.

In 358 the cities of Euboea sent messages to Athens entreating aid against the Thebans, who had despatched a large force into the island. Through the energy of Timo-theus, within five days an Athenian fleet and army under his command were in Euboea, and in the course of 30 days the Thebans were forced to evacuate the island under capitulation. In 356, the second year of the social war, Chares, Iphicrates and his son Menestheus, and Timotheus were appointed to the joint command of an Athenian fleet. In 354 Chares accused his colleagues of having been the direct cause of his defeat at Chios, and Timotheus and Iphicrates were recalled and accused of treason. Iphicrates was acquitted, but Timotheus was found guilty and fined 100 talents. He retired to Chalcis in Euboea, where he died in the same year. His son Conon was permitted to compromise the fine by paying 10 talents for repairing the walls of the city.