This is a list of the tallest buildings in Saint John, New Brunswick. Saint John is a city on the Fundy coast of New Brunswick and is the first incorporated city in Canada. It is the second largest city in the province of New Brunswick.
As of 2026, Saint John contains 5 buildings that stand taller than and 14 high-rise buildings that exceed 30 m (98 ft) in height. The tallest building in the city is the 19-storey, Brunswick Square. This building is tied with Assumption Place in Moncton for the tallest building in New Brunswick. In addition, Brunswick Square is the second largest office building by floor space in all of Atlantic Canada, after the Maritime Centre in Halifax. The second-tallest building in the city is the J.D Irving Building standing at 61 m (200 ft) tall with 12 storeys.
In June 2016, Irving Oil began construction on a new headquarters in Uptown Saint John, next to the imperial theatre. This building is 11 storeys and in height, making it the city's third tallest building. The tallest building under construction in Saint John is the Fundy Quay Buildings, with four proposed towers one of them the First Building will be 6 floors, the North-Western Building will be 19 floors the North-East Building is unknow right know as of 2026 and the South-East Building will be also 6 floors. If constructed, The Fundy Quay Buildings will be the single largest residential construction project ever undertaken in New Brunswick.
A new 11-storey residential high-rise, 99 King, is under construction as of 2026. Upon completion, it would be the first residential high-rise built in the city in over 30 years.
This list ranks buildings in Saint John that stand at least 15 metres (49 ft) tall, based on CTBUH height measurement standards. This includes spires and architectural details but does not in4clude antenna masts4
The Saint John City Market is the oldest continuing farmer's market in Canada, with a charter dating from 1785. Located in Saint John, New Brunswick and completed in 1876, the current market building has a unique roof structure that resembles an inverted ship's keel. Made of wooden trusses, the structure was reportedly built by unemployed ship carpenters of the day. Also, the floor slopes with the natural grade of the land. The architecture is in the Second Empire style.
Some of the businesses in the market have been operating continuously there for more than 100 years. Facing onto Kings Square, the market is connected to the city's indoor pedway system.
The market was designated a National Historic Site of Canada in 1986.
The Courtenay Bay Generating Station was an oil-fired power station owned by NB Power that entered service in 1960 and provided baseload electricity for the province. The station was retired in the late 1990s and repurposed as a gas-fired generating station. The original smokestacks remain standing.