| Kato Agios Ioannis | |
| Name Local: | Κάτω Άγιος Ιωάννης |
| Type: | community |
| Periph: | Central Macedonia |
| Periphunit: | Pieria |
| Municipality: | Katerini |
| Population: | 486 |
| Population As Of: | 2021 |
| Elevation: | 60 |
| Coordinates: | 40.325°N 54°W |
| Postal Code: | 601 00 |
| Area Code: | +30-2351 |
| Licence: | KN |
| Caption Skyline: | A sculpture in Kato Agios Ioannis |
Kato Agios Ioannis (Greek, Modern (1453-);: Κάτω Άγιος Ιωάννης) is a village and a community of the Katerini municipality.[1] Before the 2011 local government reform it was part of the municipality of Korinos, of which it was a municipal district.[1] The 2021 census recorded 486 inhabitants in the village.