Mom jeans is a slang term for high-waisted women's jeans that were originally fashionable in the late 1980s and early 1990s. In the late 1990s and 2000s they were mainly worn by middle-aged American women and considered unhip by trendy younger women. Mom jeans then came back in style amongst hipsters and fashionably aware young women in the 2010s.

The term was originally derogatory and gained prominence from a May 2003 Saturday Night Live skit written by Tina Fey for a fake brand of jeans called Mom Jeans, which used the tagline "For this Mother's Day, don't give Mom that bottle of perfume. Give her something that says, 'I'm not a woman anymore...I'm a mom!' "

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