| Glafkos | |
| Source1 Location: | Southern Panachaiko |
| Mouth Location: | Gulf of Patras, Ionian Sea |
| Mouth Coordinates: | 38.2153°N 21.7161°W |
| Subdivision Type1: | Country |
| Subdivision Name1: | Greece |
| Length: | 26.3 km |
The Glafkos (Greek, Modern (1453-);: Γλαύκος|Gláfkos; Latin: Glaucus[1]) is a small river in the city of Patras, Greece. It flows into the Gulf of Patras (Ionian Sea) in Patras south of the city centre. It is 26.3km (16.3miles) long.[2]
A hydroelectric power plant was built on this river in 1927. Currently, it is open to the public as a museum.
Its source is in the southern part of the mountain Panachaiko, near the village Vetaiika. It flows along the villages Moira and Neo Souli, and through the southern part of the city of Patras.