Market Harborough is a market town in the Harborough district of Leicestershire, England, close to the border with Northamptonshire. The population was 24,779 at the 2021 census. It is the administrative headquarters of the Harborough district.

A market town is a settlement most common in Europe that obtained by custom or royal charter, in the Middle Ages, a market right, which allowed it to host a regular market; this distinguished it from a village or city. In Britain, small rural towns with a hinterland of villages are still commonly called market towns, as sometimes reflected in their names.