Coquitlam (/koʊˈkwɪtləm/) is a city in the Lower Mainland of British Columbia, Canada. Coquitlam is mainly a suburban city, and is one of the 21 municipalities comprising Metro Vancouver. According to the 2007 Canadian Census, it is the 5th-largest city in British Columbia.

Coquitlam's geographic shape can be thought of as a tilted hourglass, with two larger parcels of land with a smaller central section connecting them. Southwest Coquitlam comprises the original core of the city, with Maillardville and Fraser River industrial sector giving way to the large residential areas of Austin Heights, colloquially referred to as "The Bump" due to its high and flat plateau topography. These older residences, with larger property dimensions, are increasingly being torn down and replaced with newer and larger homes. The Poirier Street area was the city's original recreational centre with the Coquitlam Sports Centre, Chimo Aquatic and Fitness Centre, and sports fields located there, while City Hall was previously located further south in Maillardville.

The Austin Heights area contains Como Lake, a renowned urban fishing and recreation area, and headwaters for the Como watershed. The watershed represents one of the last urban watersheds in the Tri-Cities that supports wild stocks of Coho Salmon as well as other species at risk such as coastal Cutthroat Trout (both sea-run and resident) and bird species such as the Great Blue Heron and Green Heron.