Queenston Heights, Historic park in Niagara-on-the-Lake, Canada.

Queenston Heights is a park on the Niagara Escarpment in Niagara-on-the-Lake offering green spaces with monuments, walking paths, tennis courts, and children's splash pads. The grounds feature two covered pavilions, designated parking areas, restroom facilities, and picnic spots distributed throughout.

Queenston Heights was the site of the Battle of Queenston Heights in October 1812, during the War of 1812, when Major-General Sir Isaac Brock was killed in action defending Upper Canada. The promontory above Queenston, where the Niagara Escarpment is cut by the Niagara River, later received Brock's Monument and a monument to Laura Secord. The site was designated a National Historic Site of Canada in 1968, and Fort Drummond there is separately recognized.

The 1867 song "The Maple Leaf Forever" names Queenston Heights in its lyrics, tying the escarpment site to a piece of Canadian popular culture. The song was written by Alexander Muir, and the line recalls the battle fought there in 1812.

Brock's Monument holds 235 interior stairs up to a viewing area near the top. The heights sit directly above the village of Queenston, about 5.7 km north of Niagara Falls, reached via the Niagara Parkway. The cliff face drops roughly 100 m, so keep to marked paths along the edge.

The site marks the southern starting point of the Bruce Trail, a long hiking route that extends hundreds of kilometers north to Tobermory. This connection makes the park a significant departure point for hikers exploring the entire escarpment.