The Eleventh Commandment
The Eleventh Commandment may refer to:

Aphorisms 
 The Eleventh Commandment (Ronald Reagan): "Thou shalt not speak ill of any fellow Republican." "The Eleventh Commandment", a statement by soil conservationist Walter C. Lowdermilk
 "The Eleventh Commandment", a recurring segment in the radio show The Catholic Guy
 A mythical secret rule that is presumed to be known by others, e.g. "Remember the eleventh commandment: 'Don't get caught'." or "We can't be punished! That violates the eleventh commandment: 'The rich don't go to jail'." etc. Film, theatre and television 
 The Eleventh Commandment (play), a 1921 play by Brandon Fleming
 The Eleventh Commandment (film), various films
 "The Eleventh Commandment", an episode in series six of Holby City
 The Eleventh Commandment, a 1986 play by David Schneider

Literature 
 The Eleventh Commandment, a 1962 novel by Lester del Rey
 The Eleventh Commandment, the 1976 autobiography of British playwright Jimmy O'Connor
 The Eleventh Commandment, a 1990 novel by Andreas Schroeder
 The Eleventh Commandment (novel), a 1998 novel by Jeffrey Archer

Music 
 "The Eleventh Commandment", a song and music video from Collin Raye's 1998 album The Walls Came Down
 "Eleventh Commandment", an instrumental song by Ben Harper and The Blind Boys of Alabama from the gospel album There Will Be a Light released in 2004

See also 
 Ten Commandments (disambiguation)
 613 Commandments
 The 614th Commandment