Lawrenceville is a borough in Tioga County, Pennsylvania, in the United States. The population was 627 at the 2000 census.
Lawrenceville is located at 41°59′48″N 77°7′31″W / 41.99667°N 77.12528°W / 41.99667; -77.12528 (41.996564, -77.125159). It is at the intersection of Pennsylvania Route 287 and Pennsylvania Route 49. The only traffic light in town can be found at this intersection. Lawrenceville is on the banks of the Tioga and Cowanesque rivers. The confluence of these streams is just outside of downtown Lawrenceville. Cowanesque Lake, a US Army Corps of Engineers flood prevention lake is just to the west of town on Pennsylvania Route 49.
According to the United States Census Bureau, the borough has a total area of 0.6 square miles (1.4 km²), all of it land.