ARR may refer to:
Arrow is an American action crime television series developed by writer/producers Greg Berlanti, Marc Guggenheim, and Andrew Kreisberg.
Arrested Development is an American television sitcom created by Mitchell Hurwitz, which originally aired on Fox for three seasons from November 2, 2003 to February 10, 2006. A fourth season of 15 episodes was released on Netflix on May 26, 2013. The show follows the fictitious Bluth family, a formerly wealthy and habitually dysfunctional family.
The Arrowverse is a shared fictional universe that is centered on television series airing on The CW, developed by Greg Berlanti, Marc Guggenheim, Andrew Kreisberg, Phil Klemmer and Geoff Johns, based on characters appearing in publications by DC Comics.
Arrival is a 2016 American science fiction film directed by Denis Villeneuve and written by Eric Heisserer, based on the 1998 short story "Story of Your Life" by Ted Chiang.
In social choice theory, Arrow's impossibility theorem, the general possibility theorem or Arrow's paradox is an impossibility theorem stating that when voters have three or more distinct alternatives (options), no ranked order voting system can convert the ranked preferences of individuals into a community-wide (complete and transitive) ranking while also meeting a pre-specified set of criteria: unrestricted domain, non-dictatorship, Pareto efficiency, and independence of irrelevant alternatives.
The Arrow or Hetz (Hebrew: חֵץ, pronounced [ˈχet͡s]) is a family of anti-ballistic missiles designed to fulfill an Israeli requirement for a theater missile defense system that would be more effective against ballistic missiles than the MIM-104 Patriot surface-to-air missile.
Arranged marriage is a type of marital union where the bride and groom are selected by their families.
Arrietty, titled The Borrower Arrietty (Japanese: 借りぐらしのアリエッティ, Hepburn: Kari-gurashi no Arietti) in Japan and The Secret World of Arrietty in North America, is a 2010 Japanese animated fantasy film made in Studio Ghibli, directed by Hiromasa Yonebayashi and scripted by Hayao Miyazaki and Keiko Niwa.
Arrhythmogenic right ventricular dysplasia (ARVD) is an inherited heart disease.