Kallieis (, full form Δήμος Καλλιέων) is a former municipality in the northern part of Phocis, Greece. Since the 2011 local government reform it is part of the municipality Delphi, of which it is a municipal unit. Its registered population in 2001 amounted to 2,328. The seat of the municipality was Mavrolithari, which is home to about 20% of the municipal unit population. Its area is about 192,000 hectares.