奥洛纳河是意大利的河流，属于兰布罗河的支流，河道全长71公里，流域面积1,038平方公里，平均流量每秒14立方米，流经瓦雷泽省、米兰省和帕维亚省，河畔城镇有米兰。

The Olona (Ulona, Urona or Uòna in Western Lombard) is an Italian river, 71 kilometres (44 mi) long, that runs through the provinces of Varese, Milan and Pavia.

The Olona has more than one source; in fact it has six main springs. Three springs are located in the Rasa Valley, just above Varese, whereas other three springs pour water down from the southern side of pleasant Valganna - since 1877 these still clean and fresh mountain waters were historically used, and still are, to make beer in a renowned local brewery, Poretti, now run by Carlsberg.