ACH or Ach may refer to:

Aviation

* IATA airport code for St. Gallen–Altenrhein Airport in Switzerland

Businesses and organisations

Businesses

* ACH Food Companies, Inc., American subsidiary of Associated British Foods *

ACH Network In the United States, the ACH Network is the national automated clearing house (ACH) for electronic funds transfers established in the 1960s and 1970s. It is a financial utility owned by US banks, and is one of the largest payments networks i ...

, American electronic fund clearing house *

Automotive Components Holdings Automotive Components Holdings, LLC (informally ACH) is a Ford Motor Company-managed temporary business formed by the 2005 transfer of 17 automotive components factories and six research, testing and other facilities from Visteon Corporation to ...

, LLC, a Ford-managed temporary company

Hospitals

* Adelaide Children's Hospital, former component of the Women's and Children's Hospital, Adelaide, South Australia *

Akron Children's Hospital Akron Children's Hospital (ACH) is a pediatric acute care hospital in Northeast Ohio that provides care to infants, children, adolescents, young adults, aged 0–21 and even some older adults. Akron Children's has hospital campuses in downtown Akr ...

, Akron, Ohio, U.S. *

Alberta Children's Hospital Alberta Children's Hospital (ACH) is a children's hospital located in Calgary, Alberta, Canada and operated by the Calgary Health Region of Alberta Health Services. It originally opened on May 19, 1922 as the Junior Red Cross Children's Hospital ...

, Calgary, Alberta, Canada *

Arkansas Children's Hospital Arkansas Children's Hospital (ACH) is a pediatric hospital with a Level I trauma center in Little Rock, Arkansas. It is among the largest in the United States, serving infants, children, teens, and young adults from birth to age 21. ACH is affi ...

, Little Rock, Arkansas, U.S.

Organizations

* ''Accion contra el hambre'', part of the

Action Against Hunger Action Against Hunger () is a global humanitarian organization which originated in France and is committed to ending world hunger. The organization helps malnourished children and provides communities with access to safe water and sustainable s ...

network * Association for Computers and the Humanities

People

* Ach (surname) * ''Ach.'', taxonomic author abbreviation for

Erik Acharius Erik Acharius (10 October 1757 – 14 August 1819) was a Swedish botanist who pioneered the Taxonomy (biology), taxonomy of lichens and is known as the "father of lichenology". Acharius was famously the last pupil of Carl Linnaeus. Life Ac ...

(1757–1819), Swedish botanist *

ACH (wrestler) Albert Charles Hardie Jr. (born December 7, 1987) is an American professional wrestler, currently known by his ring name ACH. He has wrestled for several American promotions, like Ring of Honor Wrestling (ROH), AAW: Professional Wrestling Re ...

, American professional wrestler Albert C. Hardie, Jr (born 1987)

Places

Aach (toponymy) ''Aach'' (variants ''Ach'', ''Ache''; ''Aa'') is a widespread Upper German hydronym, from an Old High German (Proto-Germanic ) (ultimately from PIE ). The word has also been reduced to a frequent suffix in Alemannic and Austro-Bavarian topony ...

, a term for "river" in German hydronymy ** Ach (Ammer), a tributary of the Ammer, Bavaria, Germany **

Ach (Blau) The Ach, also called Aach, is a river located in Baden-Württemberg, Germany. It flows into the Blau in Blaubeuren. Geography Source The river Ach has its source west of Schelklingen in the Achursprung (535 m above sea level), a karst sprin ...

, a tributary of the Blau, Baden-Württemberg, Germany **

Bregenzer Ach The Bregenzer Ach (also: ''Bregenzer Ache'') is the main river of the Bregenz Forest () in the Austrian state of Vorarlberg. It is a tributary to Lake Constance and the River Rhine, respectively. Geography The source of the river is above ...

, a tributary of Lake Constance, Austria **

Dornbirner Ach The Dornbirner Ach (also called ''Dornbirner Ache'') is a long stream in Vorarlberg, Austria, and a tributary of Lake Constance () and the Rhine, respectively. It flows through two gorges in its upper part, the Alploch Gorge and the Rappenloch G ...

, a tributary of Lake Constance, Austria **

Friedberger Ach The Friedberger Ach is a river in Bavaria, Germany. It is a right tributary of the Danube. Its source is in the village Untermühlhausen, northeast of Landsberg am Lech. For most of its length it flows parallel to the river Lech (river), Lech at o ...

, a tributary of the Lech, Bavaria, Germany * Ach, Iran, a village in Qazvin Province

Science

Acetone cyanohydrin Acetone cyanohydrin (ACH) is an organic compound used in the production of methyl methacrylate, the monomer of the transparent plastic polymethyl methacrylate (PMMA), also known as acrylic. It liberates hydrogen cyanide easily, so it is used as a ...

, an organic compound *

Acetylcholine Acetylcholine (ACh) is an organic compound that functions in the brain and body of many types of animals (including humans) as a neurotransmitter. Its name is derived from its chemical structure: it is an ester of acetic acid and choline. Par ...

(ACh), a neurotransmitter *

Aluminium chlorohydrate Aluminium chlorohydrate is a group of water-soluble, specific aluminium salts having the general formula . It is used in cosmetics as an antiperspirant and as a coagulant in water purification. In water purification, this compound is preferred in ...

, a group of water-soluble, specific aluminium salts

Sports

AC Horsens Alliance Club Horsens (), commonly referred to as AC Horsens () or simply Horsens, is a Danish professional football club based in Horsens, Central Denmark Region. Founded in 1994, as a superstructure on Horsens fS (founded 1915), Stensballe ...

, a Danish football club *

Allan Cup Hockey Allan Cup Hockey (ACH), also known as the OHA Senior “AAA” Hockey League, is a senior ice hockey league with three teams in Southern Ontario. The league was founded in 1990 as the Southwestern Senior "A" Hockey League. It is governed by th ...

, a Canadian senior ice hockey league

Transportation

Achnashellach railway station Achnashellach railway station is a railway station serving Achnashellach on the Kyle of Lochalsh Line, in Wester Ross, Scotland. The station lies between Strathcarron railway station, Strathcarron and Achnasheen railway station, Achnasheen, fro ...

, Scotland, National Railway code ACH

Other uses

Acholi dialect Acholi ( , also Leb Acoli, or Leb Lwo) is a Southern Luo dialect spoken by the Acholi people in the districts of Gulu, Kitgum, Amuru, Lamwo, Agago, Nwoya, Omoro and Pader (a region known as Acholiland) in northern Uganda. The Dhopaluo ...

, ISO 639 code ach *

Advanced Combat Helmet The Advanced Combat Helmet (ACH) is the United States Army's current combat helmet, used since the early 2000s. It was developed by the U.S. Army Soldier Systems Center, the U.S. Army Special Operations Command, and the U.S. Army Research Labo ...

, in the United States Army *

Air changes per hour Air changes per hour, abbreviated ACPH or ACH, or air change rate is the number of times that the total air volume in a room or space is completely removed and replaced in an hour. If the air in the space is either uniform or perfectly mixed, air c ...

, a measure of ventilation *

Analysis of competing hypotheses The analysis of competing hypotheses (ACH) is a methodology for evaluating multiple competing hypotheses for observed data. It was developed by Richards (Dick) J. Heuer, Jr., a 45-year veteran of the Central Intelligence Agency, in the 1970s for ...

, a methodology * Automated clearing house, a network for processing transactions