Beaver Run is a tributary of Catawissa Creek in Columbia County, Pennsylvania, in the United States.

The stream flows north for a short distance before turning west, flows west and slightly south for several miles between McCauley Mountain and Buck Mountain, eventually turns northwest and then southwest less than a mile later.

A short distance downstream, it turns west and crosses Pennsylvania Route 339, then reaches its confluence with Catawissa Creek.

[1] Beaver Run joins Catawissa Creek 13.02 miles (20.95 km) upstream of its mouth.

[9] The wetlands of Beaver Run are listed as a "locally significant site" in the Columbia County Natural Areas Inventory.

[5] The wetlands of Beaver Run are a highbush blueberry / meadowsweet shrub swamp which includes trees and shrubs such as red elderberry, black ash, poison sumac, speckled alder, buttonbush, steeple-bush, and mountain holly.

[5] A red maple / yellow birch / eastern hemlock palustrine forest is also found in the vicinity of Beaver Run, as is a buttonbush / highbush blueberry shrub swamp.

These include common yellowthroat, gray catbird, house wren, ovenbird, swamp sparrow, and yellow warbler.