Hollow Run is a tributary of Cooks Creek which is located in Durham Township, Bucks County, Pennsylvania in the United States.

Hollow Run was entered into the Geographic Names Information System of the U.S. Geological Survey on 30 August 1990 as identification number 1196191.

[1] Hollow Run rises on the eastern slope of Buckwampum Hill oriented north for a short distance.

[2] Buckwampum Hill is part of the Quartz Fanglomerate formation, from the Jurassic and Triassic, which is a coarse conglomerate of rounded cobbles and boulders.

As it approaches Cooks Creek it flows into the Hardyston Formation, from the Cambrian period, consisting of quartzite and feldpathic sandstone and has some quartz pebble conglomerate and is somewhat porous and limonitic.