Carnal Knowledge is a 1971 American comedy-drama film directed by Mike Nichols and written by Jules Feiffer. It stars Jack Nicholson, Art Garfunkel, Ann-Margret and Candice Bergen.

Carnal knowledge is an archaic or legal euphemism for sexual intercourse. The term derives from the Biblical usage of the verb know/knew, as in the King James Bible and other versions, a euphemism for sexual conduct. An example of this usage is in the first part of the Bible, the Book of Genesis, which describes how Adam and Eve created their first child: "And Adam knew Eve his wife; and she conceived, and bore Cain, and said, I have gotten a man with [the help of] Jehovah." – .