Human sexual behavior or different human sexual practices encompass a wide range of activities such as the search for a partner or partners, interactions between individuals, physical or emotional intimacy, and sexual contact.

Some cultures will find only sexual contact within marriage acceptable; however, extramarital sexual activity still takes place. Unprotected sex may result in unwanted pregnancy or sexually transmitted diseases. In some areas, sexual abuse of individuals is prohibited by law and considered against the norms of society.