2G is the second-generation wireless telephone technology.

2G or 2-G may also refer to: Red 2G, a dye Yellow 2G, a dye Cargoitalia's IATA code A character from Eden of the East 2G-Regel, a public health rule in use during the COVID-19 pandemic in Germany, Switzerland and Austria

See also 2G+2, an album by the Fall The 2 G's, a radioshow G2 (disambiguation) GG (disambiguation) iPhone 2G