Namouchos Didumoxarthides (379 BC-333 BC) was a Thracian warrior in the service of King Alexander the Great of Macedon during the 4th century BC. In 333 BC, he fought under Alexander's general Crios at the Battle of Mazaka in central Anatolia, where he and most of the other Thracians were killed in battle with the Persians of Cappadocia.