| Hotel Cipriani Srl | Learn more | .cipriani | |
| Hughes Satellite Systems Corporation | Learn more | .dvr | |
| HBO Registry Services, Inc. | Learn more | .hbo | |
| HOUSING DEVELOPMENT FINANCE CORPORATION LIMITED | Learn more | .hdfc | |
| HDFC Bank Limited | Learn more | .hdfcbank | |
| HERMES INTERNATIONAL | Learn more | .hermes | |
| Hisamitsu Pharmaceutical Co.,Inc. | Learn more | .hisamitsu | |
| Hitachi, Ltd. | Learn more | .hitachi | |
| Homer TLC, Inc. | Learn more | .homedepot | |
| Honda Motor Co., Ltd. | Learn more | .honda | |
| Honeywell GTLD LLC | Learn more | .honeywell | |
| HSBC Holdings PLC | Learn more | .hsbc | |
| HTC corporation | Learn more | .htc | |
| Hughes Satellite Systems Corporation | Learn more | .hughes | |
| Hyatt GTLD, L.L.C. | Learn more | .hyatt | |
| Hyundai Motor Company | Learn more | .hyundai | |
| H. Lundbeck A/S | Learn more | .lundbeck | |
| Hughes Satellite Systems Corporation | Learn more | .sling | |
| Homer TLC, Inc. | Learn more | .thd | |
