List of tallest buildings in the Waterloo Regional Municipality

The Waterloo Regional Municipality is a large urban area in Southern Ontario comprising the cities of Waterloo, Kitchener and Cambridge and adjacent rural townships which include some towns. The cities have a combined population of 593,833 as of 2020. Kitchener is experiencing a high rise development boom never before seen in a mid size Canadian city. In Waterloo Region,, the region contains 61 highrises over 50 m and 110 high-rise buildings that exceed 35 m in height. The tallest buildings built and proposed are in Kitchener's downtown core. With 16 buildings proposed over 40 floors, and 6 over 50 floors. The tallest currently built in Kitchener is the 130.7 m DTK Condos, which is the tallest building in Canada between Mississauga and Winnipeg. The majority of the high-rises in the area are in Kitchener, though Waterloo does contain a significant amount most of which are within the University District.

The tallest development that is under construction in Waterloo Region is TEK Tower in Kitchener, at 146 m (479ft) and 45 floors. , there are at least 184 high-rises under construction, approved for construction, and proposed for construction in the Waterloo Regional Municipality, of which 91 are within Kitchener. Once built, Station Park E at 50 floors and 175 meters will be the tallest building in Kitchener and the Region of Waterloo. Soon to be overtaken by the 57 storey, 50 Borden Ave S development. Most of the proposed buildings are within Kitchener continuing the building boom seen in recent years that was primarily spurred by the ION LRT and high tech migration to Kitchener.

Tallest buildings
This list ranks buildings in Waterloo that stand at least 35 m tall, based on CTBUH height measurement standards. This includes spires and architectural details but does not include antenna masts.

Proposed and Under Construction
* The heights of "The Metz" buildings have increased but the information on how tall is not yet public, what is known is that the buildings will not be taller than 38 floors. Within the City Council meeting the developer stated buildings D-G will be getting the height increases (combined to be 40 stories of increase).

** The buildings at "The inclusive on Courtland" do not have heights established yet, Spotlight bought the property from the previous owners and is currently going through redesign. Initial renders of the project were shown in a photo with Premier Doug Ford, the buildings are all 36 floors in height.