在数学中，一个范畴C的子范畴（subcategory）是一个范畴S，其物件为C内的物件，态射为C内的态射，且有相同的单位态射与态射复合。直观上来看，C的子范畴是一个从C中“移去”部分物件和态射的范畴。
函子范畴 functor category ; [数] category of functors
完全子范畴 full subcategory ; complete subcategory
自反子范畴 reflexive subcategory
融和子范畴 amalgamated subcategory
局部化子范畴 localizing subcategory
零子范畴 [数] null subcategory
共尾子范畴 [数] cofinal subcategory
遗传子范畴 [数] hereditary subcategory
上遗传子范畴 [数] cohereditary subcategory
上局部化子范畴 [数] colocalization subcategory
然而我们也许注意几个常用的利润子范畴。
However, there are several commonly used profit subcategories investors should be aware of.
在动态空间关系中又划分出了起点、过程、终点意义这三个子范畴。
In the dynamic spatial relations, he also carved out a starting point, process, end the meaning of these three sub-areas.
将来是时间范畴下的一个子范畴，它的概念化与时间的概念化融为一体。
Because of the fact that future is a sub-concept of time, the conceptualization of future merges with the conceptualization of time.
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