• inclusion (disability rights), a term used to process of equitably including people with disabilities in society.
• inclusion (value and practice), the practice of including people in organizations.
• inclusion (education), the practice of integrating disabled students into schools.
• inclusion (mineral), a mineral or rock enclosed in a larger body of rock.
• inclusion bodies, the nuclear structures often found in biological cells at the sites of virus multiplication.
• inclusion (taxonomy), the process whereby two species that were believed to be distinct are found in fact to be the same and are thus combined as one species
• Include file, the inclusion of programming code with so-called include-files.

The term inclusion can also be used in mathematics in the following ways:

• inclusion (set theory), the binary relation of one set being a subset of another.
• inclusion map, the identity function on a set S restricted to a subset of S.

See also

• Inclusive (disambiguation)
• Exclusive (disambiguation)