''Fundus'' (Latin for "bottom") is an anatomical term referring to that part of a concavity in any organ, which is at the far end from its opening. It may refer to:

Anatomy

* Fundus (brain), the deepest part of any sulcus of the cerebral cortex * Fundus (eye), the interior surface of the eye, opposite the lens, and including the retina, optic disc, macula and fovea, and posterior pole ** Fundus camera, equipment for photographing the interior of the eye ** Fundus photography * Fundus (stomach), the portion of the stomach which bulges up past the point of entry of the esophagus * Fundus (uterus), the top portion, opposite from the cervix * Fundus of gallbladder, the portion of the gallbladder which lies the farthest from the cystic duct * Fundus of the urinary bladder

Other uses

* Fundus (seabed), the seabed in a tidal river below low water mark {{disambiguation