Widehem is a commune in the Pas-de-Calais department in the Nord-Pas-de-Calais region of France.
Widehem is located 12 miles (19 km) north of Montreuil-sur-Mer, on the D148E5 road, 3miles (5k) from the coast.
Known and recorded as "Wodingahem" in 877, after a Germanic chief of the region who opposed Charlemagne.