GEO or Geo may refer to any of the following:

• Geo or gio, is a creek (inlet) or gulley in the Orkney and Shetland Islands
• GEO (newspaper), a popular scientific magazine
• Geo (microformat), a microformat for marking up WSG84 geographical coordinates in (X)HTML
• Geo (automobile), a brand of entry-level cars from General Motors
• Geo (marketing), a discipline within marketing analysis
• GEO 600, a detector for gravitational radiation
• Geo TV, a private television channel in Pakistan
• Global Environment Outlook, an environmental assessment produced by the United Nations
• Grupo Especial de Operaciones, a division of the Spanish police
• Gene Expression Omnibus, a scientific database for microarray data provided by the NCBI
• General Education Officer, the basic rank of teachers of the Ministry of Education in Singapore
• Genetically engineered organism, also known as genetically modified organism, an organism whose genetic material has been altered
• GEO, the IATA code for Cheddi Jagan International Airport
• Estadio Casas GEO, stadium in Mexicali, Mexico
• Geo, the Korean manhwa artist.

Geo. is sometimes an abbreviation of the name George. In the Shetland and Orkney islands, a geo or gio (from Old Norse gjá[1]) is an inlet, a gully or a narrow and deep cleft in the face of a cliff. ... Location Geography Area Ranked 16th  - Total 990 km²  - % Water  ? Admin HQ Kirkwall ISO 3166-2 GB-ORK ONS code 00RA Demographics Population Ranked 32nd  - Total (2005) 19,590  - Density 20 / km² Politics Orkney Islands Council http://www. ... Location Geography Area Ranked 12th  - Total 1,466 km²  - % Water  ? Admin HQ Lerwick ISO 3166-2 GB-ZET ONS code 00RD Demographics Population Ranked 31st  - Total (2005) 22,000  - Density 15 / km² Scottish Gaelic  - Total () {{{Scottish council Gaelic Speakers}}} Politics Shetland Islands Council http://www. ... Geo is a microformat used for marking up WGS84 geographical coordinates (latitude;longitude) in (X)HTML. This allows parsing tools (for example other websites, or Firefoxs Operator extension) to extract the locations, and display them using some other website or mapping tool, or to load them into a GPS... Geo was a brand of small cars and SUVs marketed by General Motors and sold through Chevrolet dealerships throughout North America beginning in 1989 in the United States, and 1992 in Canada. ... In marketing, geo (also called marketing geography) is a discipline within marketing analysis which uses geolocation (geographic information) in the process of planning and implementation of marketing activities. ... Geo 600 is a gravitational wave detector located in Hannover, Germany. ... Geo TV or GEO Television is an Urdu Pakistani television network that was established in May 2002 and officially began transmission in October 2002. ... To meet Wikipedias quality standards, this article or section may require cleanup. ... The Grupo Especial de Operaciones (Special Operations Group, GEO) is part of the Spanish National Police and is stationed in Guadalajara near the capital, Madrid. ... The National Center for Biotechnology Information (NCBI) is part of the US National Library of Medicine (NLM), which is a branch of the US National Institutes of Health. ... Educational oversight Minister Ministry of Education Tharman Shanmugaratnam National education budget S$6. ... A genetically modified organism (GMO) is an organism whose genetic material has been altered using the genetic engineering techniques generally known as recombinant DNA technology. ... Cheddi Jagan International Airport (IATA: GEO, ICAO: SYCJ) is located at , , 41 kilometres south of Guyanas capital, Georgetown. ... Estadio Casas GEO, also known as Estadio Nido de las Aguilas, is a stadium in Mexicali, Mexico. ... Manhwa (Hangul: 만화, Hanja: 漫畫) is the general Korean term for comics and cartoons (including animated cartoons). ... Look up George in Wiktionary, the free dictionary. ...

• Geo Stelar is the main protagonist in Megaman Star Force.

As a prefix, geo- is taken from the Greek word γη or γαια meaning "earth", usually in the sense of "ground or land". Geo- is thus a prefix for many words dealing in some way with the earth, including:

• Geocaching, an outdoor activity that involves using navigational techniques to finds geocaches
• Geocentric, a model of the universe that places the earth at its centre
• Geodesy, also known as geodetics, the study of the measurement and representation of the earth
• Geo-exchange, a heating and cooling system
• Geography, the study of the Earth and its features
• Geolocation, the science of determining the real-world location of a website or website visitor
• Geology, the study of the Earth's structure
• Geometry, the study of spatial relationships
• Geopolitics, the analysis of history, geography and social science with respect to international politics
• Geostationary orbit, a circular orbit directly above the earth's equator
• Geosynchronous orbit, an orbit that has the same period as the Earth's sidereal rotation
• Geothermal (geology), heat sources from within the Earth

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