在数学中，集合域是有序对<X, F>，其中 X 是集合，F 是 X 上的代数。

• F 是 X 的幂集布尔代数的子代数。在明确上下文时，亦称 F 为集合域。
• X 的元素称为点，而 F 的元素称为复形。

集合域在布尔代数的表示理论中扮演中心角色。所有布尔代数都可以被表示为集合域。

In mathematics a field of sets is a pair where is a set and is an algebra over i.e., a non-empty subset of the power set of closed under the intersection and union of pairs of sets and under complements of individual sets. In other words, forms a subalgebra of the power set Boolean algebra of . (Many authors refer to itself as a field of sets. The word "field" in "field of sets" is not used with the meaning of field from field theory.) Elements of are called points and those of are called complexes and are said to be the admissible sets of .