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