| OleVea | Maharashtra |
| Olio Global AdTech | |
| Olive Global | Delhi |
| Olive Web Hosting | Delhi |
| Oliveboard Pvt Ltd | Karnataka |
| Olivo Software Company Pvt Ltd | |
| Om Data Entry India | Gujarat |
| OM Engineering College | |
| OM Nanotech Pvt Ltd | Uttar Pradesh |
| Om Soft Solution | |
| OM Software Internet Solutions (P) Ltd | Madhya Pradesh |
| OM Solutionz Pvt Ltd | |
| OM Sterling Global University | |
| OM Visions IT Services (P) Ltd | Uttar Pradesh |
| Omatics Digital & Marketing Agency | |
| Omega Orion Pvt Ltd | |
| Omega Softwares | Maharashtra |
| Omega-X Development and Learning Fulcrum Pvt Ltd | |
| OMessenger | Tamil Nadu |
| Omikrosys | West Bengal |
| Ominfowave Software Services Pvt Ltd | |
| Omkar Software Pvt Ltd | Karnataka |
| OMLogic Consulting | Delhi |
| Ommzi Solutions | |
| Omni Infoword Pvt Ltd | Uttar Pradesh |
| OmniBridge | |
| OmniBRx Technologies | Gujarat |
| Omnie Solutions (I) Pvt Ltd | |
| Omninos Solutions | |
| Omninos Technologies International Pvt Ltd | |
| Omniscient Computer Consultants | Delhi |
| Omnist TechHub Solutions Pvt Ltd | |
| Omnivore Capital Management Advisors Pvt Ltd | |
| OmTec Web | |
| OMWEB | |
| OMX Technologies | |
| Omy Infotech | Gujarat |
| ON Time Infotech | |
| OnCloudERP | Tamil Nadu |
| OncoStem Diagnostics Pvt Ltd | |
| OncoStem Diagnostics Pvt Ltd | |
| OnDemandClone | Gujarat |
| One Alliance Infotech | Maharashtra |
| One Byte Labs Pvt Ltd | Karnataka |
| One Creators Infotech Solutions Pvt Ltd | |
| One Design Marketing Technologies | |
| One Devs | |
| One Klick SEO Pvt Ltd | |
| One Stack Solution Pvt Ltd | Haryana |
| One2all Solutions | |