Slavery is the act of forcing a being into servitude against their will and without compensation.
Known races and societies that practice slavery are:
- Orions: see Orion slavery, Orion slave girl and Grey Orion
- Magna Romans
- In the mirror universe, the Tholians, the Terran Empire and the Klingon-Cardassian Alliance
Those (officially) opposed to it are:
- The Federation