A group is a number of persons or things that are located, gathered, or classed together.

Groups of people

* Cultural group, a group whose members share the same cultural identity *

Ethnic group An ethnic group or an ethnicity is a grouping of people who identify with each other on the basis of shared attributes that distinguish them from other groups. Those attributes can include common sets of traditions, ancestry, language, history, ...

, a group whose members share the same ethnic identity * Religious group (disambiguation), a group whose members share the same religious identity * Social group, a group whose members share the same social identity * Tribal group, a group whose members share the same tribal identity * Organization, an entity that has a collective goal and is linked to an external environment * Peer group, an entity of three or more people with similar age, ability, experience, and interest

Social science

In-group and out-group In sociology and social psychology, an in-group is a social group to which a person psychologically identifies as being a member. By contrast, an out-group is a social group with which an individual does not identify. People may for example ide ...

* Types of social groups, Primary, secondary, and reference groups * Social group * Collective, Collectives

Philosophy and religion

* Khandha, a Buddhist concept of five material and mental factors that take part in the rise of craving and clinging

Science and technology

Mathematics

* Group (mathematics), a set together with a binary operation satisfying certain algebraic conditions

Chemistry

* Functional group, a group of atoms which provide some property to a molecule * Group (periodic table), a column in the periodic table of chemical elements

Computing and the Internet

* Group (computing), a collection of users or other objects * Group (database) * Group (online social networking) * Usenet newsgroup * Google Groups * Yahoo! Groups * Facebook groups

Other uses in science and technology

* Group (stratigraphy), in geology, consisting of formations or rock strata * Cultivar group, in biology, a classification category in the ''International Code of Nomenclature for Cultivated Plants'' * Galaxy groups and clusters, in cosmology * Group (firearms), the grouping of shots from a firearm * Language group, a unit of classification within a Language family

Other uses

* Breed Groups (dog), the group or category to which breeds of dogs are assigned by kennel clubs * Group (auto racing), a category of car allowed to compete in auto racing * Army group * Militia groups * Rebel groups * Terrorist groups * Group (military unit), an air force formation * Corporate group, a group of affiliated companies * Group psychotherapy, sometimes colloquially known as "group" * Musical ensemble