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Look up son-in-law in Wiktionary, the free dictionary.
Son-in-law is a kinship relationship as a result of marriage.
Son-in-law may also refer to:
- Son in Law (film), a 1993 American comedy film
- Son-in-Law (horse) (1911–1941), British Thoroughbred racehorse
- "Son-in-Law" (8 Simple Rules episode), an episode from Season 1 of the American sitcom 8 Simple Rules