Bény is a commune. It is found in the Auvergne-Rhône-Alpes region in the Ain department in the east of France. In 2009, 734 people lived in the commune. The inhabitants are the Bénéens. The local economy is mostly based around agriculture. The most important monument in the commune is the Marmont manor house (manoir), listed as a monument historique since 1992.