| Cortical lobule | |
| Latin: | Lobuli corticales renis |
| System: | Urinary system |
| Artery: | Interlobular arteries |
| Vein: | Interlobular veins |
A cortical lobule (or renal lobule) is a part of a renal lobe. It consists of the nephrons grouped around a single medullary ray, and draining into a single collecting duct. Its near identical parallel is the rectal lobe, which is present in the majority of mammals.