Boolean (named after George Boole) may also refer to:
- Boolean algebra, a logical calculus of truth values or set membership
- Boolean algebra (structure), a set with operations resembling logical ones
- Boolean data type, a certain datatype in computer science
- Boolean expression, an expression in a programming language that produces a Boolean value when evaluated
- Boolean function, a function that determines Boolean values or operators
- Boolean module, a field pioneered by Chris Brink over relation algebras
- Boolean network, a certain network consisting of a set of Boolean variables whose state is determined by other variables in the network
- Boolean satisfiability problem
- Boolean semigroup, an algebraic structure