Aulnay (French pronunciation: [onɛ], pronounced ɔnɛ, the "l" is mute) is a commune in the Aube department in the Grand Est region of north-central France.

Aulnay is located some 28 km east by south-east of Arcis-sur-Aube, 16 km north-west of Brienne-le-Château, and 50 km west by south-west of Saint-Dizier. Access to the commune is by the D 35 road from Jasseines in the north which passes through the west of the commune and the village before it continues south to Chalette-sur-Voire. The D 5 road comes from Brillecourt in the west and passes through the village before continuing east to Braux. South of the village is the hamlet of Petit Aulnay. Apart from a belt of trees along the river the commune is entirely farmland.

The Ravet river flows through the commune from east to west forming part of the south-facing border in both the east and west of the commune before continuing west to join the Aube at Brillecourt.

This list is incomplete; you can help by adding missing items. (April 2021)

List of Successive Mayors

From	To	Name
	1857	Bonnot
2001	2026	Jacky Cartier

The inhabitants of the commune are known as Aulnaysiens in French.

Historical population

Year Pop. ±% p.a. 1793 141 —     1800 148 +0.69% 1806 152 +0.45% 1821 179 +1.10% 1831 148 −1.88% 1836 173 +3.17% 1841 195 +2.42% 1846 201 +0.61% 1851 219 +1.73% 1856 216 −0.28% 1861 221 +0.46% 1866 209 −1.11% 1872 211 +0.16% 1876 174 −4.71% 1881 194 +2.20% 1886 151 −4.89% 1891 158 +0.91% 1896 150 −1.03%	Year Pop. ±% p.a. 1901 146 −0.54% 1906 160 +1.85% 1911 162 +0.25% 1921 139 −1.52% 1926 165 +3.49% 1931 158 −0.86% 1936 162 +0.50% 1946 136 −1.73% 1954 135 −0.09% 1962 131 −0.38% 1968 117 −1.87% 1975 109 −1.01% 1982 105 −0.53% 1990 106 +0.12% 1999 118 +1.20% 2007 112 −0.65% 2012 135 +3.81% 2017 129 −0.91%
Source: EHESS and INSEE

The town hall contains 4 Stained glass windows (16th century) which are registered as an historical object.

The Church of Saint-Rémy was built in the 16th century but collapsed in recent years. There are only the remains of the Romansesque Nave which was rebuilt in the 18th century.

The Parish Church contains many items that are registered as historical objects:

• A Tombstone (16th century) (destroyed)
• An Eagle Lectern (19th century)
• A Statue: Christ on the Cross (16th century)
• A Tabernacle (18th century)
• A Statue: Saint-Rémy (16th century)
• A Statue: Sainte-Savine (16th century)
• A Statuette: Saint-Jean-Baptiste (16th century) (disappeared)
• A Statue: Saint-Roch (16th century)
• A Statuette: Saint-Antoine (16th century)
• A Statue: Virgin and Child (16th century)
• An Inscription (1681) (destroyed)
• An Altar (19th century)
• A Stoup (17th century)
• The Furniture in the Church

• Communes of the Aube department

• Aulnay on the old IGN website (in French)
• Aulnay on Géoportail, National Geographic Institute (IGN) website (in French)
• Aulnay on the 1750 Cassini Map