| Harish-Chandra Research Institute | Uttar Pradesh |
| Harmony Infotech | Andhra Pradesh |
| Harrier Information Systems | |
| Harsh Mann Luxury Consultancy | |
| Harvee Health Care | |
| Haryana Engineering College | |
| Haryana Institute of Public Administration Gurugram | |
| HAS Technosys Pvt Ltd | |
| Hash Media | |
| Hash Mob | |
| Hash Technologies Pvt Ltd | West Bengal |
| HashAdv | |
| Hashcodexperts Infoservices Pvt Ltd | |
| HashCube Technologies Pvt Ltd | Karnataka |
| Hashkite Pvt Ltd | |
| HashStudioz Technologies | |
| HashTag Labs | |
| Hashtag Orange | |
| Hashtag Software Development | |
| HashTag Technologies | |
| HashTAGit | Haryana |
| Hashtags Digital Marketing Agency | |
| Hashtasy Digital Pvt Ltd | Maharashtra |
| Hashtech Systems Pvt Ltd | Maharashtra |
| Hashtechy Technologies Pvt Ltd | |
| Hashtrust | |
| haskar Pandurang Hivale Education Society | |
| Hasoft Kenya | |
| Haspr | |
| Hasten IT Solutions | |
| Hastree Technologies Pvt Ltd | |
| HasYas | Karnataka |
| Hatch2web IT Solutions | |
| Hatchlogics | |
| HatchStation | Telangana |
| Hathway | Maharashtra |
| Havfly | |
| Havnai | |
| Hawkeyes Verification Services India Pvt Ltd | Karnataka |
| HaystackAnalytics Pvt Ltd | Maharashtra |
| HB Infotech Solutions | |
| HB Softweb | |
| HBFITES | Karnataka |
| HCL Corporation Pvt Ltd | Uttar Pradesh |
| HCL Software | |
| HCL Technologies Ltd | Uttar Pradesh |
| HD Infotech | |
| HD Labs | |
| HDRC | Delhi |
| Head Digital Works Pvt Ltd | Telangana |