Fresnes-lès-Montauban is a commune in the Pas-de-Calais department in the Nord-Pas-de-Calais region of France.
A farming village situated 9 miles (14.5 km) northeast of Arras, at the junction of the N50 and the D46 roads. Junction 16 of the A1 autoroute is within a few yards of the commune.