Agios Konstantinos, Phthiotis

Agios Konstantinos () is a town and former municipality in Phthiotida (Phthiotis), Greece. After the 2011 administrative division reforms it became part of the municipality of Molos-Agios Konstantinos and it is now ranked as a municipal unit. The municipal unit has an area of 72.292 km2. Its population was 3,183 in 2011.
The town has a harbor with a regular ferry-boat connection to the islands of Skiathos, Skopelos and Alonnisos. These islands are part of the Northern Sporades archipelago.