Unital

Unital may refer to:
 * A unital algebra – an algebra that contains a multiplicative identity element.
 * A geometric unital – a 2-(n3 + 1, n + 1, 1) block design for integer n ≥ 3.
 * A unital algebraic structure, such as a unital magma.
 * A unital map on C*-algebras – a map that preserves the identity element.