1G (disambiguation)

1G is the first-generation wireless telephone technology.

1G or 1-G may also refer to:

• Metallothionein 1G
• 1g Racing, manufacturer of the Rossion Q1 sports car
• Astra 1G, a satellite operated by SES
• SSH 1G (WA) or Washington State Route 538
• Galileo International's IATA code
• 1G, a model of Toyota G engine