Ramcat Run is a long 1st order tributary to the Youghiogheny River in Fayette County, Pennsylvania.
Ramcat Run rises about 1.5 miles southeast of Sugar Loaf Knob, and then flows east to join the Youghiogheny River at Huston.
Ramcat Run drains of area, receives about 48.7 in/year of precipitation, has a wetness index of 350.74, and is about 94% forested.