GEOS (株式会社ジオス, Kabushiki Kaisha Jiosu) was one of the Big Four[1] private eikaiwa, or English conversation teaching companies, in Japan.

[6] The GEOS Eikaiwa Corporation filed for bankruptcy on April 21, 2010; 99 schools were closed and the remaining 230 were sold to G.Communication, which is also the "sponsor" of Nova.

In 1973, roommates Kiyoshi Aki and Tsuneo Kusunoki founded the company AMVIC, an acronym of the phrase, "AMbition and VICtory".

[8] On July 6, 2007, The Japan Times reported that GEOS Eikaiwa would open a school for 150 students in St. Petersburg, Russia as part of a recent expansion into the Russian market by Japanese companies including Toyota and Nissan.

[9] On January 29, 2010, the eight Australian GEOS Eikaiwa branches suspended operations, with the nine companies responsible for the schools forced into voluntary administration.

Despite a request to GEOS Eikaiwa Japan for funding, it was not forthcoming, leaving 2300 students without the courses they had paid for and 390 employees without jobs or payouts.

[12] On April 21, 2010, GEOS Eikaiwa Corporation filed for bankruptcy with the Tokyo District Court with an outstanding debt of about 7.5 billion yen.