The Kidneys were an organ found within the anatomy of some species. The sentient Yarkora species possessed four kidneys in order to cope with the amount of food they ate to fill their two stomachs.
- "TK-462"—Star Wars Insider 166 (Mentioned only)
- Last Shot
- Doctor Aphra 21: The Catastrophe Con, Part II
- Aftermath: Life Debt (Mentioned only)
- Aftermath: Empire's End
- Phasma (Mentioned only)
- Star Wars: Absolutely Everything You Need to Know (First mentioned)