National Grid
National Grid or National grid may refer to:

Power transmission
Electrical grid, an interconnected network for delivering electricity
National Grid (Great Britain), the electricity transmission network of Great Britain
National Grid plc, a utilities company based in the UK that also operates in the northeastern United States
National Grid (India), the electricity transmission network of India
National Grid (Malaysia), the electricity transmission network of Malaysia
National Grid (New Zealand), the electricity transmission network of New Zealand

Geosurvey
National grid reference system, a national geographical coordinate system for mapping
Ordnance Survey National Grid, used in Great Britain
Irish national grid reference system
United States National Grid

Other uses
National Grid for Learning, a former government funded educational program in the UK

See also
Power Grid Corporation of India
State Grid Corporation of China