| Full Circle Biotechnology | Bangkok |
| Full Line Computer Co., Ltd | Bangkok |
| Fusion Advantec Co., Ltd | Nonthaburi |
| G H Bank | |
| Galaxy Ventures Co., Ltd | Bangkok |
| Gecko Do It Co., Ltd | |
| GenXHost | Bangkok |
| Geo-Informatics and Space Technology Development Agency | Bangkok |
| GetAmped.in.th | Bangkok |
| Glypt Co., Ltd | Bangkok |
| GMWebsite | Bangkok |
| GO PR Co., Ltd | Bangkok |
| Gofive Co., Ltd | Bangkok |
| GOMEW Web Design | Bangkok |
| Gosoft (Thailand) Co., Ltd | Nonthaburi |
| Government Savings Bank | |
| Guide Vision Ltd | Phuket |
| Haiku Academy | Surat Thani |
| HandiGo Co., Ltd | Bangkok |
| Hatyai Technical College | |
| Hatyai University | |
| Health Systems Research Institute | |
| Hellomyweb.com | Bangkok |
| Heroleads | Bangkok |
| HongHost Co., Ltd | Bangkok |
| Host Paragon | Bangkok |
| Hostatom | Bangkok |
| HostDomain.in.th | Bangkok |
| Hosting Bangkok | Bangkok |
| Hosting Thailand | Bangkok |
| Hosting-Group Co., Ltd | Chonburi |
| HostPacific.com | Bangkok |
| HPG Technology Co., Ltd | Bangkok |
| HSBC Thailand | |
| Humanica Public Co., Ltd | Bangkok |
| I&I Group Public Co., Ltd | Bangkok |
| i-App Creation Co., Ltd | Bangkok |
| i-bitz | |
| I-Secure | Bangkok |
| iApp Technology | Bangkok |
| IBC Advance Technology Co., Ltd | Bangkok |
| IC WEB Co., Ltd | Bangkok |
| IC-MyHost | Bangkok |
| iCONEXT Co., Ltd | Bangkok |
| Idalot Web Services | Bangkok |
| Identity RFID | Bangkok |
| iGetWeb | Bangkok |
| Ikebana Engineering Ltd | Bangkok |
| Imagineac | Bangkok |
| Indian Overseas Bank Bangkok | |