Hermanville is a commune in the Seine-Maritime department in the Normandy region in north-western France.

A small farming village situated by the banks of the Vienne river in the Pays de Caux, some 9 miles (14 km) southwest of Dieppe, at the junction of the D 108, D 123 and D 127 roads.

The arms of Hermanville are blazoned : Argent, a fess azure between 3 roses gules, the fess charged with 3 charged bezants [Or] 1: a lion contourny, 2: a double-headed eagle and 3: a lion all sable voided.

Historical population

Year	Pop.	±% p.a.
1968	119	—
1975	101	−2.32%
1982	110	+1.23%
1990	132	+2.31%
1999	111	−1.91%
2007	111	+0.00%
2012	108	−0.55%
2017	116	+1.44%
Source: INSEE

• A seventeenth century manorhouse.
• The ruins of a feudal castle.
• The church of St.Martin, dating from the twelfth century.
• An old windmill, now converted to a residence.
• The statue of St. Patrick's Brewery.

• Communes of the Seine-Maritime department