Kato Olympos (Greek: Κάτω Όλυμπος, lit.

'Lower Olympos') is a municipal unit in the Tempi municipality, within the regional unit of Larissa, in the historical and administrative region of Thessaly, Greece.

The municipal unit has an area of 128.462 km2 (49.599 sq mi).

[3] The seat of the municipal unit is located in Pyrgetos, the largest of its four 'Local Communities' (τοπική κοινότητα): Kato Olympos contains on the southernmost faces of the foothills of Mt.

The municipal unit also contains the northern half of the Vale of Tempi a narrow gorge formed by the Pineios which was the site of an important battle during the Second World War.