The coat of arms of the district (now the city) of Coquitlam, was granted on 25 July 1991. When the former District of Coquitlam was incorporated as the City of Coquitlam on 1 December 1992, the coat of arms was affirmed for continued use.

In the shield, the wavy blue bars with the gold centre have two meanings; firstly referring to the Fraser River and the gold rush which led to the first European settlement in the area, secondly to the Coquitlam and Pitt Rivers and to the wealth generated from the riverside location. The blue fleur-de-lys honors the French Canadians who established Maillardville in 1909, the District's first large settlement. In the upper part of the shield, the crenellated line represents the Royal Engineers who built the first roads in the community in the early 1860s. The dogwoods emphasize that Coquitlam is a British Columbian community, while the silver fraise refers to both Simon Fraser and the great river which is both Coquitlam's southern boundary and the trade route for some of its early lumber and agricultural products. The crest is a coronet of fraises and dogwood flowers (a "Coquitlam coronet").

Two gold Clydesdale stallions were chosen as supporters, to represent the role of horsepower in the development of the early lumber industry and land clearing. They are made unique through the addition of blue fraises at the shoulder of the horses.

The motto, ANIMUS FLUMINUM VIRES POPULI, "The Spirit of the River The Strength of the People" combines an expression of the City's geographic situation with its aspiration and strengths.

Data abridged from here, which was from
The Greater Vancouver Book