Earl Rowe Provincial Park, Provincial park in Simcoe County, Canada.

Earl Rowe Provincial Park is a 312.42-hectare recreational park in Adjala–Tosorontio near Alliston, Ontario. Its centrepiece is Earl Rowe Lake, a man-made lake formed by damming the Boyne River, which provides a swimming area for campers.

The park began with a first land purchase in 1957, when William Earl Rowe, then the area's Member of Parliament, pushed for its creation; more farmland was acquired before it opened in 1964. It is named for Rowe, a former Lieutenant Governor of Ontario.

The park bears the name of William Earl Rowe, former Lieutenant Governor of Ontario, who as the area's MP pushed for its creation. The first land purchase came in 1957, and farmland was added before the park opened in 1964.

The park provides picnic shelters, camping areas, and marked trails for day use and overnight stays. Conditions and accessibility vary throughout the year, so planning your visit around the season helps ensure a comfortable experience.

Earl Rowe Lake is not natural: it was formed by damming the Boyne River, and its water serves as the swimming area for campers staying in the park. The 312.42 ha park began with a first land purchase in 1957 and opened in 1964.