Woolrich (/ˈwʊlrɪtʃ/ WUUL-ritch) is an unincorporated community in Pine Creek Township, Clinton County, Pennsylvania, United States.

The company was founded in 1830 by John Rich and Daniel McCormick, and originally located at a mill on Little Plum Run in nearby Dunnstable Township.

By 1834, Rich and McCormick decided to move their operations to a location with a better water supply at Chatham's Run in Pine Creek Township.

They bought 300 acres and first built a sawmill; around 1845 the company (by then solely owned by John Rich) relocated to a new mill at the Chatham's Run location.

This 1845 mill no longer exists in its original configuration, but its location remains the site of Woolrich's main operations[citation needed] and its surrounding community.