La corteza insular o simplemente ínsula, es una estructura del cerebro humano. Se encuentra ubicada profundamente en la superficie lateral del cerebro, dentro del surco lateral (cisura de Silvio), que separa las cortezas temporal y parietal inferior. Estas regiones corticales superpuestas se conocen como opércula; parte de los lóbulos frontal, parietal y temporal forman una opércula sobre la ínsula, por ello la ínsula no es visible en la cara externa del cerebro y queda cubierto por las estructuras citadas.

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In each hemisphere of the mammalian brain the insular cortex (often called insula, insulary cortex or insular lobe) is a portion of the cerebral cortex folded deep within the lateral sulcus (the fissure separating the temporal lobe from the parietal and frontal lobes). The insulae are believed to be involved in consciousness and play a role in diverse functions usually linked to emotion or the regulation of the body's homeostasis. These functions include perception, motor control, self-awareness, cognitive functioning, and interpersonal experience. In relation to these, it is involved in psychopathology. The insular cortex is divided into two parts: the larger anterior insula and the smaller posterior insula in which more than a dozen field areas have been identified. The cortical area overlying the insula toward the lateral surface of the brain is the operculum (meaning lid). The opercula are formed from parts of the enclosing frontal, temporal, and parietal lobes.

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