RHD
- Bangladesh
- FAP 403 RHD
- Left- and right-hand traffic
- RHD (gene)
- Rabbit haemorrhagic disease
- Random House Dictionary
- Red Hand Defenders
- RhD haemolytic disease of the newborn
- Ribblehead railway station
- Right hemisphere brain damage
- Roads and Highways Department
- Robbery Homicide Division
- Robbery Homicide Division (TV series)