मन मस्तिष्क की उस क्षमता को कहते हैं जो मनुष्य को चिंतन शक्ति, स्मरण-शक्ति, निर्णय शक्ति, बुद्धि, भाव, इंद्रियाग्राह्यता, एकाग्रता, व्यवहार, परिज्ञान (अंतर्दृष्टि), इत्यादि में सक्षम बनाती है। सामान्य भाषा में मन शरीर का वह हिस्सा या प्रक्रिया है जो किसी ज्ञातव्य को ग्रहण करने, सोचने और समझने का कार्य करता है। यह मस्तिष्क का एक प्रकार्य है।

The mind is what thinks, feels, perceives, imagines, remembers, and wills, encompassing the totality of mental phenomena. It includes both conscious processes, through which an individual is aware of external and internal circumstances, and unconscious processes, which can influence an individual without intention or awareness. Traditionally, minds were often conceived as separate entities that can exist on their own but are more commonly understood as features or capacities of other entities in the contemporary discourse. The mind plays a central role in most aspects of human life but its exact nature is disputed; some theorists suggest that all mental phenomena are private and directly knowable, transform information, have the ability to refer to and represent other entities, or are dispositions to engage in behavior.