HL-20 Personnel Launch System
| HL-20 Mock-Up | |
| Operator | NASA | 
|---|---|
| Applications | Crewed spaceplane | 
| Specifications | |
| Launch mass | 10,884 kg (23,995 lb) | 
| Regime | Low Earth | 
| Production | |
| Status | Cancelled | 
| Launched | 0 | 
| Related spacecraft | |
| Derivatives | HL-42, Dream Chaser | 
The HL-20 Personnel Launch System was a NASA spaceplane concept for crewed orbital missions studied by NASA's Langley Research Center around 1990. It was envisaged as a lifting body re-entry vehicle similar to the Soviet BOR-4 spaceplane design. Its stated goals were to achieve low operational costs, improved flight safety, and a possibility of landing on conventional runways. No flight hardware was built.