Punctum, plural puncta, adjective punctate, is an anatomical term for a sharp point or tip. It may also refer to:

Medical

* Lacrimal punctum, a minute opening on the margins of the eyelids that collect tears produced by the lacrimal glands *Blind spot (vision), or ''punctum cecum'', the blind spot in human vision corresponding to the location of the optic disk *Erb's point (neurology) or ''punctum nervosum'', a nerve point in the human neck *Imperforate lacrimal punctum, a congenital disorder of dogs

Unrelated species named punctum

*''Allium punctum'', a species of wild onion *''Amyna punctum'', a moth of the family Noctuidae *''Cinguloterebra punctum'', a sea snail of the family Terebridae *''Phylloxiphia punctum'', a moth of the family Sphingidae *''Sepsis punctum'', a fly of the family Sepsidae *''Zygaena punctum'', a moth of the family Zygaenidae

Other

*Punctum (gastropod), ''Punctum'' (gastropod), a genus of land snails *Punctum delens, typographic marks used to indicate deletion *Neume, the basic element of Western and Eastern systems of musical notation prior to the invention of five-line staff notation *Equant, punctum aequans, is a mathematical concept developed by Claudius Ptolemy in the 2nd century AD to account for the observed motion of heavenly bodies *A concept in the 1980 French philosophy book Camera Lucida (book), ''Camera Lucida'' *a medieval unit of time corresponding to a Quarter-hour *In photography, a term used by Roland Barthes#Photography and Henriette Barthes, Roland Barthes to refer to an incidental but personally poignant detail in a photograph * Punctate, a Glossary of botanical terms#punctate, botanical term meaning marked with an indefinite number of dots, spots, pits or glands {{disambiguation