Septum (disambiguation)

Septum or septa may refer to:
 * Septum, a partition of two cavities or spaces
 * Septum (marine biology), in marine biology, a thin membrane separating each shell chamber in cephalopods that retained their external shell
 * Septum nasi or septum, the cartilage wall separating the nostrils
 * Septum pellucidum or septum lucidum, a thin structure separating two fluid pockets in the brain
 * Interatrial septum, the wall of tissue that separates the left and right atria of the heart
 * Interventricular septum or median septum, the wall separating the left and right ventricles of the heart
 * Lingual septum, a vertical layer of fibrous tissue that separates the halves of the tongue
 * Orbital septum, a palpabral ligament in the upper and lower eyelids
 * Uterine septum or uterus didelphys, a malformation of the uterus
 * Septum, in mycology, the wall partitioning fungal hyphae into discrete cells
 * SEPTA, an acronym for the Southeastern Pennsylvania Transportation Authority
 * Special Education Parent-Teacher Association, an organization that brings together parents and teachers of special education students

Septum Septum Septum Septum