Bloomfield Run is a 4.0 mi (6.4 km) long 2nd order tributary to Oil Creek in Crawford County, Pennsylvania.

Bloomfield Run rises on the South Branch French Creek divide in Bloomfield Township, Pennsylvania.

Bloomfield Run then flows south-southeast through the Erie Drift Plain to Oil Creek at Riceville, Pennsylvania.

Bloomfield Run drains 25.85 square miles (67.0 km2) of area, receives about 46.1 in/year of precipitation, has a topographic wetness index of 470.16 and is about 51% forested.

This article related to a river in Pennsylvania is a stub.