Umbo

Umbo may refer to:

Anatomy

 * Umbo (eye), tiny depression in the center of the foveola corresponding to the foveal reflex
 * Umbo of tympanic membrane, the central, most inverted portion of the eardrum

Flora and fauna

 * Umbo (bivalve), part of a bivalve shell which was formed when the animal was a juvenile
 * Umbo (conifer cone), the first year's growth of a seed scale on a conifer cone, showing up as a protuberance at the end of the two-year-old scale
 * Umbo (mycology), at the top of some mushrooms

Other

 * Otto Umbehr (1902–1980), a German photographer known as "Umbo"
 * A shield boss, a round, convex, or conical piece of material at the center of a shield