Bonar Creek is a 2.60 mi (4.18 km) long 1st order tributary to Dutch Fork in Washington County, Pennsylvania.

This is the only stream of this name in the United States.

[1] There is a stream, called Bonar Creek, in the Province of Ontario.

According to the Geographic Names Information System, it has also been known historically as:[1] Bonar Creek rises about 3 miles southwest of Claysville, Pennsylvania, in Washington County and then flows northwest to join Dutch Fork at Coon Island.

[3] Bonar Creek drains 2.92 square miles (7.6 km2) of area, receives about 40.7 in/year of precipitation, has a wetness index of 299.33, and is about 62% forested.