Frohen-le-Petit is an ancient commune in the Somme département in the Picardie region of France. Since 1 January 2007, Frohen-le-Petit and Frohen-le-Grand have combined into the new commune of Frohen-sur-Authie.
Situated on the D938 road, some 20 miles (32 km) northeast of Abbeville.
Coordinates: 50°11′46″N 2°12′01″E / 50.1962°N 2.2002°E