Mihalıççık, also known as Mihalıçcık, is a district and municipality located in the Eskişehir Province of Turkey. It serves as a local administrative center within the province.
The district covers a total area of 1,809 km2 and sits at an elevation of 1,305 meters (4,281 feet) above sea level. As of 2022, the municipality has a population of 7,659 residents.