The logo of the CMM is a symbol of the metropolitan region’s topography. The interlacing white curves represent the St. Lawrence and Mille-Îles Rivers cutting through green land, creating a stylized representation of the islands of Montréal and Laval and the north and south shores.

The colour green is symbolic of the CMM’s unity and dynamism while the blue lettering highlights the importance of water to the region and complements the green of the symbol.