Non-abelian or nonabelian may refer to:
Non-abelian group, in mathematics, a group that is not abelian (commutative) Non-abelian gauge theory, in physics, a gauge group that is non-abelian
See also Non-abelian gauge transformation, a gauge transformation Non-abelian class field theory, in class field theory Nonabelian cohomology, a cohomology Abelian (disambiguation)