The “morality play” is one of the most recognizable medieval European dramatic genres, yet much about this term, including the form’s status and influence, remains contested. While the label morality play is a useful one for modern scholars, its origins lie in 18th-century antiquarianism rather than in medieval categorizations. The idea of a distinct morality play genre or tradition is further challenged by the vast array of staging and dramaturgical conventions and techniques displayed by extant playtexts; in the range of different audiences, occasions, and spaces for which they were designed; and in the extent to which they overlap with other dramatic and performance modes (saints’ plays, biblical plays, sotties, debates, mummings, and interludes, for example). Nevertheless, a distinct collection of plays from premodern Europe share characteristics and conceptual and dramaturgic frameworks, justifying their analysis as a group. What links these plays, whether they are written in Latin or in the vernacular, is their sustained use of personification allegory and the clear exposition of a moral sentence. At the core of any morality play sits a central figure, a personification of, say, a universalized concept of “mankind” (Humanum Genus, Everyman, Mankind), an aspect of human nature (Man’s Desire in Menschen Sin en Verganckeljcke Schoonheit), or a specific stage in life (like Youth or the Child). Such figures often also act as a mirror or an avatar for the audience. French moralités often have two central figures who represent opposing moral paths. The plays’ central figures are accompanied by an array of abstract personifications representing virtues, sins, vices, temptations, moral distractions, bad and good advice, and facts of life. These could be faculties or qualities of humankind, such as Flesh, Raison, Wit, or Ignorance; temptations and forces in the external world, such as New Guise, Custom, or Goods; facts of human existence, such as Life, Death, and Kinship; human behaviors, such as Flattery or Deceit; social groups, such as Nobility and Clergy; personifications of God’s qualities, such as Mercy; as well as supernatural beings, such as God and the Devil or Good and Bad Angels. Every part of the performance is enlisted into the allegory, from staging, props, and costumes to the actions of and between performers. Whether the protagonist is saved at the end of the play varies, but often an alignment is explicit between the life journey of the mankind figure and that of Adam, connecting the life of the individual with the great scheme of cosmic history.