338 BC

Philip II's campaign in 339–338 BC. Roman expansion in Italy from 500 BC to 218 BC through the Latin War (light red), Samnite Wars (pink/orange), Pyrrhic War (beige), and First and Second Punic War (yellow and green). Roman Republic in 338 BC is marked with dark and light red.

Year 338 BC was a year of the pre-Julian Roman calendar. At the time it was known as the Year of the Consulship of Camillus and Maenius (or, less frequently, year 416 Ab urbe condita). The denomination 338 BC for this year has been used since the early medieval period, when the Anno Domini calendar era became the prevalent method in Europe for naming years.