瓦约纳克斯(法语：Oyonnax)，是法国东部安省的一个市镇。面积 35.98平方公里，人口24162，人口密度671.54人／平方公里（1999年）。

瓦约纳克斯人口变化图示

数据来源：INSEE

Oyonnax (French pronunciation: ​[ɔjɔna]) is the second most populated commune in the Ain department in the Rhône-Alpes region in eastern France. Its residents are known as Oyonnaxiens.

Oyonnax lies in a valley of the Jura Mountains in the far north of Ain. It is near the Parc naturel régional du Haut-Jura. The city is on the river Ange. Its prominence in the plastics industry has earned it the name Plastics Valley.