G.Communication, also abbreviated as G.com, is a Japanese kabushiki kaisha based in Nagoya, Japan.

Masaki Inayoshi first opened a private cram school in 1994 called "Ganbaru Gakuen".

In October 2006, the Financial Services Agency ordered G.Communication to pay a ¥390,000 fine for insider trading after purchasing shares of one of its subsidiaries that was planning a capital increase before the information became public.

[6] As of February 1, 2012 Nova was sold to Jibun Mirai Associe Co Ltd.[7] G.Communication still owns some GEOS operations outside Japan, located in Singapore, Hong Kong, Taipei, and Thailand.

[8] Criticism of the company has been made regarding: 'disorganization and putting profit before quality and teacher's rights'.