阿尼亚诺（Agnano）是意大利那不勒斯省西北部的一个火山口，于古希腊及古罗马时期，其火山湖一带曾以温泉著名，但火山湖于1866年消失。

Agnano is a volcanic crater in Napoli, Italy, situated northwest of Naples in the Campi Flegrei region. It was popular among both Greeks and Romans, and was famed for its hot springs.

Lake Agnano formed in the Middle Ages, and this was drained in 1870 to increase arable land and reduce the habitat of the Anopheles mosquito, which carries the malaria parasite. The crater is now home to the Agnano hippodrome and a few hotels.