Isomorphism or isomorph may refer to:
Isomorphism, in mathematics, logic, philosophy, and information theory, a mapping that preserves the structure of the mapped entities, in particular: Graph isomorphism a mapping that preserves the edges and vertices of a graph Group isomorphism a mapping that preserves the group structure Order isomorphism a mapping that preserves the comparabilities of a partially ordered set. Ring isomorphism a mapping that preserves both the additive and multiplicative structure of a ring Isomorphism theorems theorems that assert that some homomorphisms involving quotients and subobjects are isomorphisms Isomorphism (sociology), a similarity of the processes or structure of one organization to those of another Isomorphism (crystallography), a similarity of crystal form Isomorphism (Gestalt psychology), a correspondence between a stimulus array and the brain state created by that stimulus Cybernetic isomorphism, a recursive property of viable systems, as defined in Stafford Beer's viable system model Isomorph (gene), a classification of gene mutation
See also Isomorph Records, a British music label Isomorphic Labs, an artificial intelligence subsidiary of Alphabet Inc.