Brock Creek is a tributary of Buck Creek, rising in Lower Makefield Township, Bucks County, Pennsylvania, and meets its confluence at Buck Creek's 0.60 river mile in Yardley Borough.

Brock Creek was entered into the Geographic Names Information System of the U.S. Geological Survey as identification number 1170304,[1] U.S. Department of the Interior Geological Survey I.D.

is 02946.

[2] Brock Creek rises near the southwest corner of Lower Makefield Township just east of Interstate 95 at an elevation of 140 feet (43 m), flowing generally east then northeast, turning northerly before it enters Yardley Borough and meets at Buck Creek's 0.60 river mile at an elevation of 49 feet (15 m).