Rule

Rule or ruling may refer to:

• Norm (philosophy), a kind of sentence or a reason to act, feel or believe
• The exercise of political or personal control by someone with authority or power
• Business rule, a rule pertaining to the structure or behavior internal to a business
• School rule, a rule that is part of school discipline
• Sport rule, a rule that defines how a sport is played
• Game rule, a rule that defines how a game is played
• Morality, a rule or element of a moral code for guiding choices in human behavior
• Social norm, explicit or implicit rules used within society or by a group
• Rule of thumb, a principle with broad application that is not intended to be strictly accurate or reliable for every situation
• Unspoken rule, an assumed rule of human behavior that is not voiced or written down

• Ruler or "rule"; a distance measuring device
• Slide rule, a mechanical analog computer
• Rule of inference or transformation rule, a term in logic for a function which takes premises and returns a conclusion
• Phrase structure rule or rewrite rule, used in some theories of linguistics
• "Rule X" elementary cellular automaton, where X is a number between 0-255 characterizing a specific model (e.g. Rule 110)
• Phonological rule

• Advance tax ruling, a tool for conforming taxation arrangements
• Court order, a decision by a court
• Government
• In rulemaking by the federal government of the United States, a regulation mandated by Congress, but written or expanded upon by the executive branch
• Law, which may informally be called a "rule"
• Military rule, governance by a military body
• Monastic rule, a collection of precepts that guides the life of monks or nuns in a religious order
• Procedural law, a ruleset governing the application of laws to cases
• Rule of law, government based not on arbitrary decisions of officials but on laws

• Rule, Arkansas
• Rule, Texas

• The Rules, bestselling self-help book
• Rules (novel), 2007 Newbery Honor book by Cynthia Lord
• "The Rulers", a science fiction short story by A. E. van Vogt

• Ja Rule (born 1976), hip hop artist

• R.U.L.E., by Ja Rule, 2004
• Rule, by Anna Tsuchiya, 2010
• Rules (The Whitest Boy Alive album), 2009
• Rules (Alex G album), 2012
• Rules, by First Blood, 2017
• Rules!, by Manila Luzon, 2019

• "Rule" (Nas song), 2001
• "Rule"/"Sparkle", a double A-side by Ayumi Hamasaki, 2009
• "Rule", by X Ambassadors from Orion, 2019
• "Rules" (Doja Cat song), 2019
• "Rules" (KMFDM song), 1996
• "Rules", by Shakira from Laundry Service, 2001
• "The Rules", by XO-IQ, featured in the television series Make It Pop

• Rule (surname)
• The Rule (film), a 2014 American documentary
• Ruler (film), a 2019 India Telugu-language film
• , a 2024 Indian period action film
• , a 2003 Bollywood film
• rule: a snippet of code which can perform email filtering
• Rule (horse) (born 2007), American racehorse
• Rules (restaurant), upscale English restaurant in London
• Rules!, a 2014 iOS video game
• "Rule #1" ( Batwoman)
• Royal University of Law and Economics, a university in Cambodia

• Debate (parliamentary procedure) for rules governing discussion on the merits of a pending question.