(Ἀρριβαῖος), king or chieftain of the Macedonians of Lyncus, is mentioned by Thucydides, in the eighth and ninth years of the Peloponnesian war, as in revolt against his sovereign, king Perdiccas. (Thuc. 2.99.) It was to reduce him that Perdiccas sent for Brasidas (B. C. 424), and against him took place the unsuccessful joint expedition, in which Perdiccas deserted Brasidas, and Brasidas effected his bold and skilful retreat. (Thuc. 4.79, 83, 124.) Comp. Strab. 7.326, &c.; Aristot. Pol. 5.8.11, ed. Schneid.