| Loudias | |
| Name Local: | Λουδίας |
| Periph: | Central Macedonia |
| Periphunit: | Thessaloniki |
| Municipality: | Chalkidona |
| Municunit: | Chalkidona |
| Community: | Mikro Monastiri |
| Population: | 665 |
| Population As Of: | 2021 |
| Coordinates: | 40.6783°N 54.5°W |
| Postal Code: | 570 07 |
| Area Code: | +30-2391 |
| Licence: | NA to NX |
| Elevation: | 5 |
Loudias (Greek, Modern (1453-);: Λουδίας) is a village of the Chalkidona municipality. Before the 1997 local government reform it was part of the community of Mikro Monastiri.[1] The 2021 census recorded 665 inhabitants in the village.
Its name is derived from the river of the same name that passes through it.