William de Windsor, Lord Hastings

Jure uxoris is a Latin term that means "by right of (his) wife".

It is most commonly used to refer to a title of nobility held by a man because his wife holds it suo jure ("in her own right").

Similarly, the husband of an heiress could become the legal possessor of her lands jure uxoris, "by right of [his] wife", as in England until the Married Women's Property Act 1882 married women were legally incapable of owning real estate. Jure uxoris monarchs are not to be confused with kings consort, who were merely consorts of their wives, not co-rulers.