Organizations

• Advertising Research Foundation
  Advertising Research Foundation
  The Advertising Research Foundation is a nonprofit industry association for creating, aggregating, synthesizing and sharing knowledge in the fields of advertising and media. It was founded in 1936 by the Association of National Advertisers and the American Association of Advertising Agencies...
  
  
• Animal Rescue Foundation
  Animal Rescue Foundation
  Tony La Russa's Animal Rescue Foundation is a "No-Kill" animal shelter based in Walnut Creek, California. ARF saves abandoned and injured animals, as well as running programs to bring dog and cat visits to abused children, hospital patients, seniors and shut-ins.The catalyst for ARF came in May...
  
  
• Animal Rights Federation, an animal rights advocacy organization
• Armenian Revolutionary Federation
  Armenian Revolutionary Federation
  The Armenian Revolutionary Federation is an Armenian political party founded in Tiflis in 1890 by Christapor Mikaelian, Stepan Zorian, and Simon Zavarian...
  
  
• Armtec Infrastructur Co.'s ticker symbol as of 2011 (TSX)
• Army Reserve Force, a division of the United States National Guard
• ASEAN Regional Forum, part of the Association of Southeast Asians
• Arbejdernes Radio- og Fjernsynsforbund, www.arf.dk

Science, medicine, and mathematics

• Acoustic radiation force
  Acoustic radiation force
  Acoustic radiation force is a physical phenomenon resulting from the interaction of an acoustic wave with an obstacle placed along its path. Generally, the force exerted on the obstacle is evaluated by integrating the acoustic radiation pressure over its time-varying surface.- Medical Imaging...
  
  
• Acute renal failure
  Acute renal failure
  Acute kidney injury , previously called acute renal failure , is a rapid loss of kidney function. Its causes are numerous and include low blood volume from any cause, exposure to substances harmful to the kidney, and obstruction of the urinary tract...
  
  
• Acute respiratory failure
• Acute rheumatic fever
• ADP ribosylation factor
  ADP ribosylation factor
  ADP Ribosylation Factors are members of the ARF family of GTP-binding proteins of the Ras superfamily. ARF family proteins are ubiquitous in eukaryotic cells, and six highly conserved members of the family have been identified in mammalian cells. Although ARFs are soluble, they generally...
  
  , ADP-ribosylation factor, a small GTP-binding protein
• In mathematics, a notation for the Arf invariant
  Arf invariant
  In mathematics, the Arf invariant of a nonsingular quadratic form over a field of characteristic 2 was defined by when he started the systematic study of quadratic forms over arbitrary fields of characteristic2. The Arf invariant is the substitute, in...
  
   for quadratic forms over the 2-element field.
• Argon fluoride laser
  Argon fluoride laser
  The argon fluoride laser is a particular type of excimer laser, which is sometimes called an exciplex laser. With its 193 nanometer wavelength, it is a deep ultraviolet laser which is commonly used in the production of semiconductor integrated circuits, eye surgery, micromachining, and scientific...
  
  , used in the production of semiconductor integrated circuits, eye surgery, micromachining, and scientific research
• Atomic Resonance Filter, another name for an Atomic line filter
  Atomic line filter
  An atomic line filter is an advanced optical band-pass filter used in the physical sciences for filtering electromagnetic radiation with precision, accuracy, and minimal signal strength loss...
  
  
• Auxin Response Factor
• p14arf
  P14arf
  p14ARF is an alternate reading frame product of the CDKN2A locus. Both p16INK4a and p14ARF are involved in cell cycle regulation. p14ARF inhibits mdm2, thus promoting p53, which promotes p21 activation, which then binds and inactivates certain cyclin-CDK complexes, which would otherwise promote...
  
  , ARF tumor suppressor, an alternative reading frame product of CDKN2A locus; a tumor suppressor gene

Other

• Abort, Retry, Fail?
  Abort, Retry, Fail?
  In computing, Abort, Retry, Fail? is a computer error message in the DOS operating system which indicates a critical error and prompts the end-user for the course of action to follow. This and other similar error messages are given by the default critical error handler...
  
  , part of an MS-DOS error message
• Abuse Reporting Format
  Abuse Reporting Format
  -History:A draft describing a standard format for FBL reports was posted by Yakov Shafranovich in April 2005 and evolved to the current RFC 5965. AOL, who pioneered the field in 2003, initially used a different format, and converted to this de facto standard in 2008...
  
  
• Advance recycling fee, such as California's Electronic Waste Recycling Fee
  Electronic Waste Recycling Fee
  The Electronic Waste Recycling Fee is a fee imposed by the government of the state of California in the United States on new purchases of electronic products with viewable screens. It is one of the key elements of the Electronic Waste Recycling Act. Retailers submit the collected fees to the Board...
  
  
• Almost-Ready-to-Fly model aircraft
  Model aircraft
  Model aircraft are flying or non-flying models of existing or imaginary aircraft using a variety of materials including plastic, diecast metal, polystyrene, balsa wood, foam and fibreglass...
  
  
• Arf, the name of a robot in SpongeBob SquarePants: Battle for Bikini Bottom
  SpongeBob SquarePants: Battle for Bikini Bottom
  SpongeBob SquarePants: Battle for Bikini Bottom is a video game based on the animated comedy series of the same name. The game was released for the Playstation 2 and Xbox consoles as well as for Microsoft Windows. The player attempts to defend Bikini Bottom from an invasion of robots created by...
  
  
• Arf arf is an onomatopoeia imitating a dog barking
• .ARF Cisco
  Cisco
  Cisco may refer to:Companies:*Cisco Systems, a computer networking company* Certis CISCO, corporatised entity of the former Commercial and Industrial Security Corporation in Singapore...
  
   WebEx
  WebEx
  WebEx Communications Inc. is a Cisco company that provides on-demand collaboration, online meeting, web conferencing and videoconferencing applications...
  
   Advanced Recording Format), Network Based Recording used to Cisco's Webex to record Teleconference
  Teleconference
  A teleconference or teleseminar is the live exchange and mass articulation of information among several persons and machines remote from one another but linked by a telecommunications system...
  
   meetings
• Australian rules football
  Australian rules football
  Australian rules football, officially known as Australian football, also called football, Aussie rules or footy is a sport played between two teams of 22 players on either...