Any kind of logic, function, expression, or theory based on the work of George Boole is considered **Boolean**.

Related to this, "Boolean" may refer to:

- Boolean data type, a form of data with only two possible values (usually "true" and "false")
- Boolean algebra, a logical calculus of truth values or set membership
- Boolean algebra (structure), a set with operations resembling logical ones
- Boolean domain, a set consisting of exactly two elements whose interpretations include
*false*and*true* - Boolean circuit, a mathematical model for digital logical circuits.
- 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 model (probability theory), a model in stochastic geometry
- Boolean network, a certain network consisting of a set of Boolean variables whose state is determined by other variables in the network
- Boolean processor, a 1-bit variable computing unit
- Boolean ring, a mathematical ring for which
*x*^{2}=*x*for every element*x* - Boolean satisfiability problem, the problem of determining if there exists an interpretation that satisfies a given Boolean formula
- Boolean prime ideal theorem, a theorem which states that ideals in a Boolean algebra can be extended to prime ideals