ACR may refer to:
Aviation
* IATA airport code for
Araracuara Airport in Caquetá Department, Colombia
*
Aircraft Classification Rating
Medicine
*
Albumin/creatinine ratio in urine
* ACR gene, encoding the enzyme
acrosin
*
ACR score for rheumatoid arthritis
*
American College of Radiology
*
American College of Rheumatology
Places
*
Accrington railway station, UK, National Rail code
Railways
* Alaska Central Railroad, original name of the
Alaska Railroad
*
Alberta Central Railway, an historical railroad in Alberta, Canada
*
Algoma Central Railway, a railroad in Northern Ontario, Canada
*
Anglesey Central Railway, a railroad in Wales, UK
Science and technology
*
Absolute Category Rating
Absolute Category Rating (ACR) is a test method used in quality
Quality may refer to:
Concepts
*Quality (business), the ''non-inferiority'' or ''superiority'' of something
*Quality (philosophy), an attribute or a property
*Quality (physics), in ...
, a subjective quality test method
*
Acumulador de Carga Rápida, a battery electric tram system
*
Adobe Camera Raw, a raw image file converter
*
Advanced CANDU reactor, a nuclear reactor
*
Advanced Communications Riser, a PC slot format
* Advanced Contrast Ratio or
Dynamic Contrast
The contrast ratio (CR) is a property of a display system, defined as the ratio of the luminance of the brightest shade (white) to that of the darkest shade (black) that the system is capable of producing. A high contrast ratio is a desired aspe ...
in an LCD display
*
Anonymous call rejection, a voice telephone network calling feature
*
Antarctic Cold Reversal, climatic cooling about 14,500 years ago
*
Anti Cam-Out Recess, an improved Philips screwdriver
*
Attenuation-to-crosstalk ratio of communication links
*
Automatic content recognition of video
*
Copper tubing for air conditioning and refrigeration
Military and weapons
* AČR,
Army of the Czech Republic
The Czech Armed Forces (), also known as the Czech Army, are the military responsible for the defence of the Czech Republic as the main part of the Armed Forces of the Czech Republic (). The Czech Armed Forces led by the Staff (military), Gen ...
(''Armáda České republiky'')
*
Adaptive Combat Rifle
*
Advanced Combat Rifle, a US Army program
*
Armored cavalry regiment
An armored cavalry regiment (ACR) is a regiment of the United States Army (Active Component, or Reserve Component (Army Reserve or Army National Guard)) organized for the specific purposes of reconnaissance, surveillance, and security. The regim ...
of the US army or national guard
*
Steyr ACR, an Austrian assault rifle
* A US Navy hull classification symbol:
Armored cruiser (ACR)
Other uses
*
Accelerated chart ratio, affects streaming totals in
the Official Charts Company's singles chart
*
Achi language, a Mayan language of Guatemala
*
Americas Cardroom, online poker site
*
A Certain Ratio, a British post-punk band
*
Dodge Viper ACR, a car
{{Disambiguation