Unitary may refer to:
Mathematics
- Unitary divisor
- Unitary element
- Unitary group
- Unitary matrix
- Unitary morphism
- Unitary operator
- Unitary transformation
- Unitary representation
- Unitarity (physics)
- E-unitary inverse semigroup
Politics
- Unitary authority
- Unitary state
See also
- Unital (disambiguation)
- Unitarianism