Mountain Top is an unincorporated area and census-designated place (CDP) in Luzerne County, Pennsylvania, United States.

[3] Mountain Top is located along Pennsylvania Route 309, south of Wilkes-Barre, in Dorrance, Fairview, Rice, and Wright townships.

Mountain Top, once named "Penobscot",[4] is located in central Luzerne County at 41°8′7″N 75°54′16″W / 41.13528°N 75.90444°W / 41.13528; -75.90444 (41.1353022, -75.9044749).

The CDP extends north to Solomon Gap, which separates Penobscot Knob to the west from Haystack Mountain to the east.

To the south, the CDP includes the settlements of Fairview Heights, Wech Corners, Rita, Albert, Rippletown, and Lindbergh.

According to the U.S. Census Bureau, Mountain Top has a total area of 15.1 square miles (39.0 km2), all of it land.

The village center sits on a drainage divide between Solomon Creek, which flows north through Solomon Gap to the Susquehanna near Wilkes-Barre, and Big Wapwallopen Creek, which flows to the southwest to the Susquehanna at Wapwallopen.