The word communion can refer to

• the Eucharist, or the act of receiving the Eucharist; or
• a group of churches in full communion with each other, or the relationship of full communion between Christian religious denominations; or
• the Communion of Saints; or
• a 1976 film; see Communion (1976 movie); or
• a 1987 autobiographical book by Whitley Strieber; see Communion (book); or
• a 1989 film based on Strieber's book; see Communion (1989 movie).