Italian National Grid
- Country: Italy
- Type: Commercial
- Website: www.terna.it
- Update: 05-02
National Grid of Italy (Terna) Italian operator of the electric transport system, headquartered in Rome, with 63,500 km of electric transmission lines, founded on May 31, 1999, under the umbrella of the Italian National Electricity Company (ENEL); Terna was ranked 1,025th in the Forbes 2014 Global 2000 list of the world's largest companies.