Trout Brook Provincial Park is a day-use park located in East Lake Ainslie on Cape Breton Island, roughly 22. 5 kilometres south of the junction of Routes 19 and 395.

The park features picnic tables set beneath a mixed-wood forest, with a white sandy beach along the shores of Lake Ainslie suitable for swimming and trout fishing.

The access point serves visitors arriving during the park's seasonal operating period, providing entry to both the forested picnic area and the lakeside beach beyond.