La mente es el conjunto de facultades cognitivas ( i.e., mentales) que engloban procesos como la percepción, el pensamiento, la conciencia, la memoria, etc., algunas de las cuales son características del humano y otras son compartidas con otras formas de vida. Este conjunto de procesos debe ser diferenciado de los estados mentales, tales como los deseos, la sensación de dolor o las creencias, que son instancias, tipos o ejemplos de dichos procesos. A lo largo de la historia la mente ha sido concebida ontológicamente en diferentes categorías (como una sustancia distinta del cuerpo, una parte, un proceso, o una propiedad).. Sin embargo, las concepciones dominantes actuales, ambas materialistas, se engloban en la teoría de la identidad mente-cerebro y el funcionalismo. La mente es concebida o tratada como tres tipos de procesos: los conscientes, los inconscientes y los procedimentales. Algunos científicos sugieren la idea de que la mente es un resultado de la actividad del cerebro, por poder localizar ciertos procesos del individuo en regiones concretas, tales como el hipocampo, cuyos daños implican un daño en el proceso de la memoria. Sin embargo, la cuestión no ha sido zanjada, en parte debido al hecho de que la mente como categoría engloba distintos procesos y estados, y corroborar la naturaleza de uno de ellos no implica a la de todos. Como objeto de estudio, la mente ha sido tratada por la psicología desde sus inicios, y su conceptualización está presente en casi todas las teorías psicológicas.

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The mind is a set of cognitive faculties including consciousness, perception, thinking, judgement, and memory. The mind is the faculty of a human being's reasoning and thoughts. It holds the power of imagination, recognition, and appreciation, and is responsible for processing feelings and emotions, resulting in attitudes and actions. There is no universally agreed definition of what a mind is and what its distinguishing properties are, although there is a lengthy tradition of inquiries in philosophy, religion, psychology, and cognitive science. The main open question regarding the nature of the mind is mind–body problem, which investigates the relation of the mind to the physical brain and nervous system. Typical viewpoints include dualism and idealism, which consider the mind somehow separate from physical existence, and physicalism and functionalism, which hold that the mind is roughly identical with the brain or reducible to physical phenomena such as neuronal activity. Another question concerns which types of beings are capable of having minds, for example whether mind is exclusive to humans, possessed also by some or all animals, by all living things, or whether mind can also be a property of some types of man-made machines. Whatever its nature, it is generally agreed that mind is that which enables a being to have subjective awareness and intentionality towards their environment, to perceive and respond to stimuli with some kind of agency, and to have consciousness, including thinking and feeling. The concept of mind is understood in many different ways by many different cultural and religious traditions. Some see mind as a property exclusive to humans whereas others ascribe properties of mind to non-living entities (e.g. panpsychism and animism), to animals and to deities. Some of the earliest recorded speculations linked mind (sometimes described as identical with soul or spirit) to theories concerning both life after death, and cosmological and natural order, for example in the doctrines of Zoroaster, the Buddha, Plato, Aristotle, and other ancient Greek, Indian and, later, Islamic and medieval European philosophers. Important philosophers of mind include Plato, Descartes, Leibniz, Searle, Dennett, Nagel, and Chalmers. Psychologists such as Freud and James, and computer scientists such as Turing and Putnam developed influential theories about the nature of the mind. The possibility of non-human minds is explored in the field of artificial intelligence, which works closely in relation with cybernetics and information theory to understand the ways in which information processing by nonbiological machines is comparable or different to mental phenomena in the human mind.

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