QE may stand for:

Economics

* Quantitative easing, a monetary policy intended to stimulate an economy in recession * Quantum economics, a type of monetary economic analysis

Education

* Qualifying examination, an exam required to continue studies at a higher level * Queen Elizabeth School (disambiguation), several schools, including: ** Queen Elizabeth's School, Wimborne Minster, in Winborne Minster, Dorset, England ** Queen Elizabeth Sixth Form College, in Darlington, County Durham, England ** Wyggeston and Queen Elizabeth I College in Leicester, England

Hospitals

* Queen Elizabeth Hospital Birmingham in England * Queen Elizabeth Hospital, Hong Kong, a hospital at King's Park in Kowloon, Hong Kong * Queen Elizabeth Hospital, Adelaide, in Australia

Mathematics

* Quantifier elimination, a technique to simplify formulas * Quadratic equation, an equation involving the second power (square) but no higher

Royalty

Queen of England (disambiguation) Queen of England or English Queen, may refer to: Royalty * A female English monarch ** Anne, Queen of Great Britain (1665-1714), the last monarch to hold the title Queen of England (1702-1707) * A female English royal consort, a female spouse of ...

Queen Elizabeth (disambiguation) Queen Elizabeth, Queen Elisabeth or Elizabeth the Queen may refer to: Queens regnant * Elizabeth I (1533–1603; ), Queen of England and Ireland * Elizabeth II (1926–2022; ), Queen of the United Kingdom and other Commonwealth realms * Quee ...

, several queens, including: ** Queen Elizabeth I of England (1533–1603) ** Queen Elizabeth II of the United Kingdom (born 1926)

Science and engineering

Quantum efficiency The term quantum efficiency (QE) may apply to incident photon to converted electron (IPCE) ratio of a photosensitive device, or it may refer to the TMR effect of a Magnetic Tunnel Junction. This article deals with the term as a measurement of ...

, a measure of a device's sensitivity to light * Quantum entanglement, a close interaction between particles at the quantum level such that they are inseparable *

Quality assurance Quality assurance (QA) is the term used in both manufacturing and service industries to describe the systematic efforts taken to ensure that the product(s) delivered to customer(s) meet with the contractual and other agreed upon performance, design ...

, also known as quality engineering * ''Quality Engineering'' (journal), an academic journal focused on quality assurance *

Query expansion Query expansion (QE) is the process of reformulating a given query to improve retrieval performance in information retrieval operations, particularly in the context of query understanding. In the context of search engines, query expansion involves ...

, a technique to provide better search results by automatically adding similar searches * Quartz Compositor, also known as Quartz Extreme, the windowing system in Mac OS X

Transportation

* Queen Elizabeth Way, a highway in Ontario, Canada * ''Queen Elizabeth''-class aircraft carrier, a class Royal Navy ships * Crossair Europe (IATA airline designator QE) * ''Queen Elizabeth'' (ship)

Culture

* ''Queer Eye'' (2003 TV series)