# Base

Base or BASE may refer to:

## Brands and enterprises

* BASE (mobile operator), a Belgian mobile telecommunications operator
* Base CRM, an enterprise software company founded in 2009 with offices in Mountain View and Kraków, Poland
* Base Design, an international design, communications, audiovisual, copywriting and publishing firm
* Base FX, a visual effects and animation company founded in 2006 with studios in Beijing, Wuxi and Xiamen, China
* Budapest Aircraft Services, callsign BASE

## Computing

* BASE (search engine), Bielefeld Academic Search Engine
* <base />, an HTML element
* Basically Available, Soft state, Eventual consistency (BASE), a consistency model
* Google Base, an online database provided by Google
* LibreOffice Base, LibreOffice's database module
* OpenOffice.org Base, OpenOffice.org's database module, also known as ooBase

## Mathematics

* Base of computation, commonly called radix, the number of distinct digits in a positional numeral system
* Base of a logarithm, the number whose logarithm is 1
* Base (exponentiation), the number b in an expression of the form b$^x$
* Base (geometry), a side of a plane figure (for example a triangle) or face of a solid
* Base (group theory), a sequence of elements not jointly stabilized by any nontrivial group element.
* Base (topology), a type of generating set for a topological space

## Organizations

* Backward Society Education, a Nepali non-governmental organization
* BASE (social centre), a self-managed social centre in Bristol, UK
* Federal Office for the Safety of Nuclear Waste Management, a German federal environmental authority
* Beaverton Academy of Science and Engineering, in Hillsboro, Oregon, US
* Bible Archaeology Search and Exploration Institute
* British Association for Screen Entertainment
* Brooklyn Academy of Science and the Environment, a high school in New York, US

## Science and technology

* Base (chemistry), a substance that can accept hydrogen ions (protons)
* Base, an attribute to medication in pure form, for example erythromycin base
* Base, one of the three terminals of a Bipolar junction transistor
* BASE experiment, an antiproton experiment at CERN
* Base pair, a pair of connected nucleotides on complementary DNA and RNA strands
* Beta-alumina solid electrolyte, a fast ion conductor material
* Nucleobase, in genetics, the parts of DNA and RNA involved in forming base pairs
* Base (blockchain), an Ethereum layer 2 blockchain

## Social science

* Base (politics), a group of voters who almost always support a single party's candidates
* Base (social class), a lower social class
* Base and superstructure (Marxism), parts of society in Marxist theory

## Sports

* Base (baseball), a station that must be touched by a runner
* Base, a position in some cheerleading stunts
* BASE jumping, parachuting or wingsuit flying from a fixed structure or cliff
* Base, a variant name for the children's game darebase

## Other uses

* Base (character), character in Marvel Comics
* Base (EP), an album by South Korean singer Kim Jonghyun
* Base, Maharashtra, a village in India
* Rob Base, American rapper
* Base, or binder (material), a material that holds paint or other materials together
* Base, or foundation (architecture), the lowest and supporting layer of a structure
* Base, or foundation (cosmetics), a cosmetic applied to the face
* Base (heraldry), the lower part of the shield in heraldry
* Base, or pedestal, a supporting feature of a statue or other item
* Cooking base, a concentrated flavouring compound
* Military base, or non-military base camp, a bivouac which provides shelter, military equipment and personnel