- Geac Computer Corporation
- GEAR Software
- Gearbox Software
- GEC 2050
- GEC 4060
- GEC 4060M
- GEC 4062
- GEC 4065
- GEC 4070
- GEC 4080
- GEC 4080M
- GEC 4082
- GEC 4085
- GEC 4090
- GEC 4150
- GEC 4151
- GEC 4160
- GEC 4162
- GEC 4180
- GEC 4185
- GEC 4190
- GEC 4190D
- GEC 4193
- GEC 4195
- GEC 4220
- GEC 4230
- GEC 4310
- GEC Computers
- GEC OS4000
- GEC Series 63
- Geek Squad
- Geekay Imaging Ltd.
- Geeknet
- Geeks On Call Holdings Inc
- Gelato
- Gelios Software
- Gemalto NV
- Gemcom Software International
- GEMMY High-Speed, High-Capacity Magnetic Disk Memory Unit
- GenArts
- GENBAND
- Gene Frantz
- Gene Hoffman
- Gene Howard Golub
- Gene Myron Amdahl
- Geneca, LLC
- Genedata
- General Automation, Inc.
- General Datatech, L.P.
- General Dynamics Information Technology
- General Electric
- General Informatics
- General Instrument (GI)
- General Magic
- General Microelectronics (GMe)
- General Microsystems, Inc.
- General Networks Corporation
- General Sentiment
- Genesi
- Genesis Consulting Partners
- Genesis Microchip Inc
- Genesys International Corp Ltd
- Genesys Telecommunications Laboratories, Inc.
- Genetec
- GENICOM
- Genisys Group
- Genius
- Genius.com, Inc
- Gennaro (Jerry) A. Cuomo
- Genostar Bioinformatics Software & Services
- Genpact
- Genuitec
- GenXM
- Geobytes
- Geocent, LLC
- Geocities
- Geodesic Ltd
- Geoff Huston
- Geoff Perlman
- Geoffrey William Arnold Dummer
- Geoforce
- GeoLearning
- Geomagic
- Geomerics
- Geometric Ltd
- Geometric Technologies
- Geomodeling Technology Corporation
- Georg (Per) Pehr Scheutz
- GEORGE
- George A. Philbrick Researches, Inc.
- George Barnard Grant
- George Bernard Dantzig
- George Bernard Shaw
- George Boole
- George Carrette
- George Ciprian Necula
- George Dyson
- George Dyson
- George Edward Pake