Beaussac (French pronunciation: [bosak]; Limousin: Baussat) is a former commune in the Dordogne department in Nouvelle-Aquitaine region in southwestern France. On 1 January 2017, it was merged into the new commune Mareuil en Périgord.

The community is located in the Périgord Limousin Regional Nature Park.

On Cassini's early map of France between 1756 and 1789, the village is identified as the Beaussat. In 1793, it is Baussac and in 1801, it is back to Beaussat.

The Lizonne forms the commune's southern border. The stream of Beaussac (ruisseau de Beaussac), a tributary of the Lizonne, forms the commune's southeastern border and part of the commune's southwestern border, separating it from Puyrenier and Rudeau-Ladosse. The town is located 34.1 kilometres (21.2 mi) southeast of Angoulême, the largest nearby city.

Airports

• Angoulême 34.1 kilometres (21.2 mi)
• Périgueux (Bassillac) 41.1 kilometres (25.5 mi)
• Cognac 66.4 kilometres (41.3 mi)

• Barouty Cave (grotto) in Pranzac 22.9 kilometres (14.2 mi)
• Golf de la Prèze (18-hole golf course) in Montbron 19.4 kilometres (12.1 mi)
• Aucors Castle [fr] – a private mansion located on the Périgord in Beaussac. Overlooking the Nizonne valley, it has been a registered historic monument since 1948.

• Alain de Monéys – member of the city council and first Deputy Mayor of Beaussac. Monéys was killed in 1870 by villagers in Hautefaye, after his report of the Franco-Prussian War was perceived to support the enemy. The case was mentioned in the 2009 romance of Jean Teulé, entitled Mangez-le si vous voulez.

Historical population

Year	Pop.	±%
1962	281	—
1968	254	−9.6%
1975	224	−11.8%
1982	203	−9.4%
1990	212	+4.4%
1999	187	−11.8%
2008	187	+0.0%

• Communes of the Dordogne department

• Corbin, Alain. Le village des "cannibales", Aubier, 1990
• Marbeck, Georges. Hautefaye, l'année terrible, Robert Laffont, 1982
• Teulé, Jean. Mangez-le si vous voulez, Éditions Julliard, 2009. ISBN 978-2-266-19846-2