Adeimantus (/ˈædiːˌmæntəs/; Ancient Greek: Ἀδείμαντος), son of Leucolophides (Λευκολοφίδης) of the deme Scambonidae (Σκαμβονιδαι), was a friend of Alcibiades. His career closely paralleled that of his famous associate. His dates are undocumented, but he was probably born in the 450s BCE and lived at least to 393 BCE.