G4, also known as G4 TV, is an American television network, originally geared primarily toward young male adult viewers, originally based on the world of video games. The channel now has a focus on male-oriented programming, although video games are still represented by the channel.

Launched on April 24, 2002, G4 is headquartered in Los Angeles, California, United States, and owned by G4 Media, which is owned by NBCUniversal/Comcast.

On April 22, 2013, the network is scheduled to be re-branded as The Esquire Network and focus on programming aimed at "metrosexual viewers".