The term regional county municipality or RCM (French: municipalité régionale de comté, pronounced [mynisipalite ʁeʒjɔnal də kɔ̃te], MRC) is used in Quebec, Canada to refer to one of 87 county-like political entities.

This includes some municipalities within urban agglomerations and also some aboriginal lands, such as Indian reserves that are enclaves within the territory of an RCM but not juridically part of it.

A MRC must: RCMs, in their definition as political units, do not cover the entire territory of Quebec.

The local municipalities of Quebec (and equivalent Aboriginal territories) not belonging to an RCM fall into the following categories: For provincial statistical purposes, the Institut de la Statistique du Québec uses the following system so that the entire territory of Quebec is divided into 104 units known as municipalités régionales de comté géographiques (MRCG) "geographical regional county municipalities".

For a list of all municipalities in Quebec together with their legal status, geographical code and date of incorporation, see List of the official municipalities of Québec, Institut de la Statistique du Québec (ISQ).