SEM can refer to:

Computing

Search engine marketing Search engine marketing (SEM) is a form of Internet marketing that involves the promotion of websites by increasing their visibility in search engine results pages (SERPs) primarily through paid advertising. SEM may incorporate search engine opt ...

, promoting websites by increasing their visibility in search engine results * Security event manager, a security log tool used on data networks

Economics and management

* Stock Exchange of Mauritius, the principal stock exchange of the island country of Mauritius * Strategic enrollment management, an element of planning for new growth at a university or college

Energy

Single Electricity Market The electricity sectors of the Republic of Ireland and Northern Ireland are integrated and supply 2.5 million customers from a combination of coal, peat, natural gas, wind and hydropower. In 2018 natural gas produced 51.8%, while wind turbines gene ...

, the integration of the electricity sectors of the Republic of Ireland and Northern Ireland in a single market * Strategic energy management, continuous improvement process for energy efficiency based on behavioral change

Mathematics and statistics

Structural equation modeling Structural equation modeling (SEM) is a label for a diverse set of methods used by scientists in both experimental and observational research across the sciences, business, and other fields. It is used most in the social and behavioral scienc ...

, in data analysis *

Simultaneous equations model Simultaneous equations models are a type of statistical model in which the dependent variables are functions of other dependent variables, rather than just independent variables. This means some of the explanatory variables are jointly determine ...

, in econometrics *

Standard error of the mean The standard error (SE) of a statistic (usually an estimate of a parameter) is the standard deviation of its sampling distribution or an estimate of that standard deviation. If the statistic is the sample mean, it is called the standard error o ...

in statistics

Places

* Craig Field (Alabama), US airport, IATA code * Sem, Ariège, France *

Sem, Norway Sem is a village in Tønsberg in Vestfold county, Norway. Sem was a former municipality in Vestfold. The parish of ''Sæm'' was established as a municipality January 1, 1838 (see formannskapsdistrikt). According to the 1835 census the municipalit ...

Science and technology

* Scanning electron microscope * Space Experiment Module, of the Freestar experiment on space shuttle Columbia * ''Synthesizer expansion module'' in an

Oberheim Electronics Oberheim is an American synthesizer manufacturer founded in 1969 by Tom Oberheim. History and products Tom Oberheim founded the company in 1969, originally as a designer and contract manufacturer of electronic effects devices for Maestro (mo ...

synthesizer * Sistema Eléctrico de Magallanes, an electrical power grid of Chile * SEM, instrument (

seismometer A seismometer is an instrument that responds to ground noises and shaking such as caused by earthquakes, volcanic eruptions, and explosions. They are usually combined with a timing device and a recording device to form a seismograph. The out ...

) of the Surface Science Platform ( Kazachok) mission ExoMars 2022 * A protecting group in organic chemistry, see 2-(trimethylsilyl)ethoxymethyl chloride (SEM-Cl)

Schools, organisations, societies

* The School of Ecclesiastic Music the school of Byzantine Music in Mount Lebanon *

Swedish Evangelical Mission The Swedish Evangelical Mission (SEM) ( Swedish: "Evangelical Homeland Foundation", EFS) is an independent, low-church, New Evangelical () movement within the Church of Sweden. It emphasizes the importance of lay involvement in the church and ...

Society for Ethnomusicology The Society for Ethnomusicology is, with the International Council for Traditional Music and thBritish Forum for Ethnomusicology one of three major international associations for ethnomusicology. Its mission is "to promote the research, study, and ...

, an ethnomusicology in Indiana, US * Science and Engineering Magnet, a school in Dallas, Texas, US * S.E.M. Group civil engineering company based in South Australia * Steam Engine Makers' Society, early British trade union * Shandong Engineering Machinery, owned by

Caterpillar Inc. Caterpillar Inc. (stock symbol CAT) is an American ''Fortune'' 500 corporation and the world's largest construction-equipment manufacturer. In 2018, Caterpillar was ranked number 65 on the ''Fortune'' 500 list and number 238 on the Global ''Fo ...

People

Shem Shem (; he, שֵׁם ''Šēm''; ar, سَام, Sām) ''Sḗm''; Ge'ez: ሴም, ''Sēm'' was one of the sons of Noah in the book of Genesis and in the book of Chronicles, and the Quran. The children of Shem were Elam, Ashur, Arphaxad, Lud ...

or Sem, one of the sons of Noah, as depicted in the Bible * Sem (given name), a usually masculine given name * Sem (artist) (1863–1934), French caricaturist * Elise Sem (1870–1950), Norwegian barrister, women's activist, and sports official * Ingebjørg Dahl Sem (born 1938), Norwegian Christian writer * Ingebjørg Sem (1931–2009), Norwegian actress * John Sem (born 1973), Papua New Guinean Olympic boxer * Niels Arntzen Sem (1782–1859), Norwegian politician * Suy Sem (born 1947), Cambodian politician

Other

* Super Étendard Modernisé, a French fighter aircraft *

Self-evaluation maintenance theory Self-evaluation maintenance (SEM) concerns discrepancies between two people in a relationship. The theory posits an individual will maintain as well as enhance their self-esteem via a social comparison to another individual. Self-evaluation refers t ...

, a psychological theory of self * New Austrian tunnelling method or Sequential Excavation Method * Sports and exercise medicine {{disambig, surname