阿尔费纳斯（葡萄牙语：Alfenas）是巴西米纳斯吉拉斯州的一个市镇。总面积848.32平方公里，总人口74505人，人口密度87.8人/平方公里。

• 米纳斯吉拉斯州市镇列表

Alfenas is a municipality in the southern part of the Brazilian state of Minas Gerais state. In 2007 its population was 71,628 and the area of the municipality is 849 km. The elevation is 888m. It is served by highways MG 179, BR 491 and BR 369. The distance to the state capital of Belo Horizonte is 335 km and the distance to São Paulo is 300 km. The slogan for the city is "Alfenas, the gateway to the sea of Minas", in reference to nearby Lake Furnas.