| Pyrgos Kallistis | |
| Name Local: | Πύργος Καλλίστης |
| Type: | community |
| Caption Skyline: | Pyrgos' main square |
| Coordinates: | 36.3831°N 25.4494°W |
| Periph: | South Aegean |
| Periphunit: | Thira |
| Municipality: | Thira |
| Municunit: | Thira |
| Population As Of: | 2021 |
| Population: | 1078 |
Pyrgos Kallistis (el|Πύργος Καλλίστης|lit=Beauty Tower) or simply Pyrgos (el|Πύργος|lit=Tower) is a village on the Aegean island of Santorini, Greece, in the Cyclades archipelago with a population of 1,078 according to the 2021 census. Pyrgos is part of the Municipality of Thira and is situated approximately 7 km away from the island's capital Fira. It is built amphitheatrically on a hill that offers magnificent views of Santorini in almost all directions. On top of this hill remain the ruins of a Venetian castle (Kasteli) that was once the island's administrative center. Pyrgos is a typical example of medieval architecture with narrow, labyrinthine streets, fortified walls and hidden passages. Nowadays it is one of the villages of Santorini least spoiled by tourism.