Gladstone Provincial Park, Nature reserve in Boundary Country, Canada.

Gladstone Provincial Park covers 39,387 hectares north of Christina Lake in the Monashee Mountains, from lakeshore to the 2,256 m Mount Gladstone and 2,279 m Mount Faith. Its biogeoclimatic zones run from Interior Cedar–Hemlock forest through Engelmann Spruce–Subalpine Fir to alpine tundra. The park is classified as a Category Ib wilderness area.

The provincial park was established in 1995 when two earlier protected areas, Ole Johnson and Texas Creek parks, were merged into a single larger conservation zone. This union created a more unified approach to protecting the region's natural features.

The park lies within the traditional hunting and fishing grounds of the Okanagan First Nations. Rock carvings, or pictographs, made by these peoples are found in the park, marking their long use of the land before settlers arrived.

Texas Creek Campground has 62 sites for tents and recreational vehicles. The park holds over 48 km of trails, reached from Highway 3 at the north end of Christina Lake, about 20 km northeast of Grand Forks. Snow can linger on the higher routes into early summer, so check conditions before setting out.

The park's boundaries were redrawn in 2014, when its area was adjusted to 39,387 hectares from roughly 39,322 at establishment. It is classed as a Category Ib wilderness area, and its terrain rises to Mount Gladstone at 2,256 m and Mount Faith at 2,279 m.