Restriction, restrict or restrictor may refer to:

Science and technology

• restrict, a keyword in the C programming language used in pointer declarations

• Restriction enzyme, a type of enzyme that cleaves genetic material

Mathematics and logic

• Restriction, a term in medieval supposition theory

• Restriction (mathematics), an aspect of a mathematical function

• Inflation-restriction exact sequence in mathematics

Other uses

• Censorship

• RESTRICT Act, a proposal to combat technology deemed to undermine the United States

• Restrictor (linguistics), a word or morpheme that specifies the meaning of a quantifier; see Polarity item

• Restrictiveness, a modifier in semantics

See also

• Restricted (disambiguation)