Pydna was an ancient Greek city in what is now the regional unit of Pieria, Central Macedonia, Greece. It is an important place in the history of Pieria and a major archaeological site located directly at the Aegean Sea, 16 km northeast of Katerini, 28 km north-east of Dion and 2.5 km from the village of Makrygialos. Nearby are two Macedonian tombs, discovered by the French archaeologist Heuzey during his Greek travels in the mid-19th century. Furthermore, the fortress-like bishop's seat Louloudies is located a few kilometers south of Pydna.

This is a reflection of the main historical events in Pieria (Πιερία), Central Macedonia.