List of tallest buildings in Atlantic Canada

This list includes the tallest buildings in the Canadian provinces of New Brunswick, Nova Scotia, Newfoundland and Labrador, and Prince Edward Island. Buildings in five cities are included in this list; Halifax, Moncton, Saint John, Fredericton, and St. John's, each having buildings at least 60 meters tall. The tallest of these high-rise buildings is One 77, which is 32 storeys and 111 m in height, which, when it topped out in 2023, supplanted the previous 52-year record-holder, The Vüze, which is 33 storeys and 106 m in height.

Tallest buildings
This list ranks buildings in Atlantic Canada that stand at least 60 m (197 ft) tall, based on CTBUH height measurement standards. This includes spires and architectural details but does not include antenna masts. An equal sign (=) following a rank indicates the same height between two or more buildings. Freestanding observation and/or telecommunication towers, while not habitable buildings, are included for comparison purposes; however, they are not ranked. One such tower is the Bell Aliant Tower.

Under construction
As of March 2023, the following buildings of at least 60 m (197 ft) height are under construction.