- Template:Lb The husband of one's aunt.
- Template:Lb The uncle of one's spouse.
Both meanings commonly used for uncle-in-law are used to define a distinction between someone who is an uncle by marriage (i.e., an in-law) and someone who is an uncle by blood (i.e., a brother of one of your parents). However both meanings are included within the standard definition of uncle, and for those who use this term, and a user may be trying to convey only one or both of the meanings given here. In general, unless there is a need for specificity, the use of uncle is to be preferred.