ASE or ase may stand for:

• Academia de Studii Economice (the Economic Sciences Academy) in Bucharest, Romania
• Accelerated Solutions Environment, a Capgemini consulting services offering
• Accelerated Solvent Extractor, a research tool for the removal of solvents from solution
• Admiralty Signal Establishment, a defense research organization in the United Kingdom
• Advanced Semiconductor Engineering, a Taiwanese semiconductor manufacturing company
• Agence spatiale européenne, the French name for European Space Agency
• Ahmedabad Stock Exchange, the second oldest exchange in India
• Alberta Stock Exchange, a defunct stock exchange in Calgary
• Alliance to Save Energy, a non-profit coalition in Washington, D.C.
• Amalgamated Society of Engineers (disambiguation), one of several similarly named trade unions
• American Society of Echocardiography
• Amman Stock Exchange, the Jordanian stock exchange
• Amity School of Engineering, a private engineering college located in NOIDA, India
• Aspen–Pitkin County Airport (IATA airport code)
• The Association for Science Education, a professional association in the United Kingdom for teachers of science
• Association for Social Economics, an international association dedicated to social economics
• Association for Surgical Education
• Association of Space Explorers, a non-governmental space organization of international astronauts
• Athens Stock Exchange, the Greek stock exchange
• Atomstroyexport, the Russian nuclear power equipment and service export monopoly
• Australian Screen Editors (an Australian film editing guild headquartered in Sydney)
• Automotive Service Excellence, a U.S.-based group to improve the quality of automobile servicing
• The former Australian Stock Exchange, now part of the Australian Securities Exchange (ASX)
• African School of Economics, a private university located in Benin

Ase may refer to

The suffix -ase is used in biochemistry to form names of enzymes. The most common way to name enzymes is to add this suffix onto the end of the substrate, e.g. an enzyme that breaks down peroxides may be called peroxidase; the enzyme that produces telomeres is called telomerase. Sometimes enzymes are named for the function they perform, rather than substrate, e.g. the enzyme that polymerizes (assembles) DNA into strands is called polymerase; see also reverse transcriptase.

Åse [pronounced aw-] is a Norwegian feminine name, historically spelled Aase. It may refer to the following:

• Åse Ludwigson, a character in the 1996 Television Mini-Series Titanic
• Åse, a character in the play Peer Gynt by Henrik Ibsen
• Åse Birkrem, a Norwegian handball player
• Åse Fosli, a Norwegian politician for the Conservative Party
• Åse Hedstrøm, a Norwegian composer based in Stockholm, Sweden
• Åse Idland, a retired Norwegian biathlete
• Åse Kleveland, a Swedish-Norwegian singer and politician
• Åse Klundelien, a Norwegian politician for the Labour Party
• Åse Gruda Skard, a Norwegian psychologist, and a pioneer in the field of the bringing up of children
• Åse Michaelsen, a Norwegian politician representing the Progress Party
• Åse Teigland, musician on the NorCD label