# Rule

Rule or ruling may refer to:

## Human activity

* 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
* Norm (philosophy), a kind of sentence or a reason to act, feel or believe
* 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

## Science

* 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

## Law and government

* 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

## Geography

* Rule, Arkansas
* Rule, Texas

## Literature

* 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

## Music

* Ja Rule (born 1976), hip hop artist

### Albums

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

### Songs

* "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

## Other uses

* Rule (surname)
* The Rule (film), a 2014 American documentary
* Ruler (film), a 2019 India Telugu-language film
* Pushpa: The Rule, a 2024 Indian period action film
* Rules: Pyaar Ka Superhit Formula, 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)
* Rule (Bosnia and Herzegovina), political party
* Royal University of Law and Economics (RULE), a university in Cambodia