Aussonce (French pronunciation: [osɔ̃s]) is a commune in the Ardennes department in the Grand Est region of north-eastern France.

Aussonce is located some 30 km north-east of Reims and 25 km south of Rethel. The western border of the commune is the departmental border between Ardennes and Marne. Access to the commune is by the D25 road from La Neuville-en-Tourne-à-Fuy in the east which passes through the village then continues west to Heutrégiville, changing to the D33 at the border. The D985 from La Neuville-en-Tourne-à-Fuy to Pontfaverger-Moronvilliers passes through the south-east of the commune. The D15 goes north-west from the village to Ménil-Lépinois. The commune consists entirely of flat farmland.

The Ruisseau d'Aussonce rises near the village and flows west to join the Suippe at Vaudetre.

The hermit Saint Sindulf of Rheims is said to have lived in Aussonce in the 7th century.

In the Aussonce church bell tower there is the following inscription: "On 3 April 1650 the battle of Aussonce took place between the Germans and locals. It lasted from 9 in the morning until 7 in the evening. The people were beaten and forced to flee. Fire was set in the village and there remained a few houses and four barns".

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

List of Successive Mayors

From	To	Name
1857	1875	Jules Frérot
1879	1885	Clovis Beauvais
1893	1914	Henri Concet
	2001	Germain Hainguerlot
2001	2008	Michel Peze
2008	2015	Gilles Preaux
2015	current	Bruno Ponsin

The inhabitants of the commune are known as Alsontains or Alsontaines in French.

Historical population

Year Pop. ±% p.a. 1793 406 —     1800 416 +0.35% 1806 419 +0.12% 1821 407 −0.19% 1831 480 +1.66% 1836 512 +1.30% 1841 454 −2.38% 1846 465 +0.48% 1851 474 +0.38% 1866 440 −0.49% 1872 428 −0.46% 1876 395 −1.99% 1881 350 −2.39% 1886 313 −2.21% 1891 316 +0.19% 1896 298 −1.17% 1901 289 −0.61%	Year Pop. ±% p.a. 1906 277 −0.84% 1911 264 −0.96% 1921 196 −2.93% 1926 207 +1.10% 1931 215 +0.76% 1936 206 −0.85% 1946 194 −0.60% 1954 217 +1.41% 1962 209 −0.47% 1968 195 −1.15% 1975 145 −4.14% 1982 136 −0.91% 1990 138 +0.18% 1999 157 +1.44% 2007 165 +0.62% 2012 195 +3.40% 2017 215 +1.97%
Source: EHESS and INSEE

• The Chapel Saint Sindulphe: at the foot of the chapel is the source of a stream called le Relais which flows towards Marne department across "les Marais" (The Marshes) to join the Suippe in Heutrégiville commune.

• The German War cemetery is in the woods (which belonged to Colonel Pierre Bouchez) on the road to Heutrégiville located opposite a Russian concentration camp during World War II. Later the bodies were interred in cemeteries at Aussonce and Warmeriville. After coming to La Neuville under TAF, the German War Graves service (SESMA) settled at Heutrégiville on land sold by René Verdelet. "Reconciliation over the graves" was the motto.

• Jules Frérot, born in Thin-le-Moutier on 9 January 1823, died 5 October 1894 at Aussonce, forester, nurseryman, a member of the League of farmers of France, Mayor of Aussonce for 21 years, cantonal delegate, former alternate justice of the peace for the canton of Juniville.

• Communes of the Ardennes department

• Father Marq, History of Aussonce, La Neuville-en-Tourne-à-Fuy, Germigny-Pend-la-Pie, Merlan, 1872, Imprimerie V. Geoffroy et Co., Reims, p. 7-17 (in French)

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