G4 (first era)[]
2001-2002 (prelaunch)[]
2002–2004, February–May 2005[]
G4TechTV[]
2004–2005[]
G4 (second era)[]
2005 (unused)[]
This logo was intended for use upon rebranding from G4TechTV in February 2005. It appeared on a few promotional and internal items leading up to the name change, but was scrapped by the time it occurred. Some cable providers continued to use this logo in their listings from 2005 until the channel's shutdown in 2014.
2005–2014[]
First used by the US flagship channel in 2005/06, recycled for its Canadian counterpart, first having the "Videogame TV" strapline read "TechTV" below the G4 logotype. up until '09. This logo is somewhat notable for making a recurring appearance as a fridge magnent in The Big Bang Theory.
With the change from an all gaming network to more of a focus on male-oriented topics, the strapline "Videogame TV" was replaced with its web address (2006–07).
Version used when G4 got briefly renamed as "4G" for seven days in 2010 to promote Sprint's 4G network rollout.