| HECTOR | Heartlands Elderly Care Trauma and Ongoing Recovery 
| Others |
| HECTOR | Heated Experimental Carbon Thermal Oscillator Reactor
| Others |
| HECTOR | Heavily Engineered Coal Truck On Rails
| Others |
| HECTOR | Homomorphic Encryption Computing Techniques with Overhead Reduction
| Others |
| HECTOR | Human Elephant Conflict Tool for Ongoing Research
| Others |