Nigoglia
The Nigoglia at Omegna
Native name	Nigoeuja Nigòja (Lombard) Nigheuja (Piedmontese)
Location
Country	Italy
Physical characteristics
Source
• location	Lake Orta
• elevation	295 m (968 ft)
Mouth	Strona
• coordinates	45°53′01″N 8°24′38″E / 45.8835°N 8.4105°E / 45.8835; 8.4105
Length	less than 2 km (1.2 mi)
Basin features
Progression	Strona→ Toce→ Lake Maggiore→ Ticino→ Po→ Adriatic Sea

The Nigoglia (Lombard: Nigoeuja or Nigòja; Piedmontese: Nigheuja) is a short Italian river whose source is at the northern end of Lake Orta, of which it is the sole outflow. Its course of less than 2 kilometres passes in a northerly direction through the town of Omegna and into the Strona.

As a rule, the outflows of Italy's major subalpine lakes run in a southerly direction, down to the plains of the Po valley. The Nigoglia is the exception, seeming to run "upwards" towards the high Alps. This peculiarity gave rise to the motto in the local dialect which is posted on the Omegna town hall, and which is quoted at the end of Gianni Rodari's children's story C'era due volte il barone Lamberto: