West Leechburg is a borough in Westmoreland County, Pennsylvania, United States, along the Kiskiminetas River. The population was 1,294 at the 2010 census.

The Kiskiminetas River is a tributary of the Allegheny River, approximately 27 miles (43 km) long, in Western Pennsylvania in the United States. The region stretching from the northern side of Harmar Township, Pennsylvania to the Kiskiminetas towns is often referred to by the locals as the Alle-Kiski Valley after the rivers.