''This article is about the issues and phenomena pertaining to human sexual function and behavior. For information about sexual activities and practices, see the article human sexual behavior. For information on animal sexuality see Animal sexuality

Human sexuality refers to the expression of sexual sensation and related intimacy between human beings, as well as the expression of identity through sex and as influenced by or based on sex. There are a great many forms of human sexuality. The sexuality of human beings comprises a broad range of behavior and processes, including the physiological, psychological, social, cultural, political, and spiritual or religious aspects of sex and human sexual behavior. Philosophy, particularly ethics and the study of morality, as well as theology, also address the subject. In almost any historical era or culture, the arts, including literary and visual arts, as well as popular culture, present a substantial portion of a given society's views on sexuality. In most societies and legal jurisdictions, there are legal bounds on what sexual behavior is permitted. Sexuality varies across the cultures and regions of the world, and has continually changed throughout history.

A large variety of books, educational websites, and local education/support/social organizations exist for various forms of sexuality.