Hautot-sur-Mer (French pronunciation: [oto syʁ mɛʁ], literally Hautot on Sea) is a commune in the Seine-Maritime department in the Normandy region in northern France.

A small town of farming and light industry situated in the Pays de Caux, immediately to the west of Dieppe, at the junction of the D 75, D 56 and D 925 roads. The chalk cliffs and pebble beach of the commune look out over the English Channel. The river Scie flows through the commune and to the sea at the small tourist resort of Pourville.

The commune was formed in 1822 by the joining together of the communes of Hautot ("Hotot" in 1240), Petit-Appeville and Pourville, on the coast. It was here that a large force of Canadian soldiers came ashore during the ill-fated Dieppe Raid on 19 August 1942.

The arms of Hautot-sur-Mer are blazoned : Vert, a chief argent, overall a lion Or.

Historical population

Year Pop. ±% p.a. 1793 520 —     1800 505 −0.42% 1806 460 −1.54% 1821 502 +0.58% 1831 829 +5.14% 1836 868 +0.92% 1841 925 +1.28% 1846 950 +0.53% 1851 930 −0.42% 1856 990 +1.26% 1861 1,068 +1.53% 1866 1,118 +0.92% 1872 1,194 +1.10% 1876 1,183 −0.23% 1881 1,310 +2.06% 1886 1,487 +2.57% 1891 1,384 −1.43% 1896 1,272 −1.67%	Year Pop. ±% p.a. 1901 1,342 +1.08% 1906 1,483 +2.02% 1911 1,431 −0.71% 1921 1,361 −0.50% 1926 1,311 −0.75% 1931 1,419 +1.60% 1936 1,589 +2.29% 1946 1,689 +0.61% 1954 1,903 +1.50% 1962 1,639 −1.85% 1968 1,657 +0.18% 1975 1,912 +2.07% 1982 1,982 +0.51% 1990 2,111 +0.79% 1999 2,120 +0.05% 2007 1,991 −0.78% 2012 1,978 −0.13% 2017 1,914 −0.66%
Source: EHESS and INSEE (1968-2017)

• A nineteenth century château
• The ruins of a feudal castle
• A memorial to the World War II raid, built in 2002.
• The two churches of St.Remi, both dating from the sixteenth century
• The modern church at Petit-Appeville
• Two 16th-century stone crosses

• Communes of the Seine-Maritime department