Madelyn is a first name. Notable people with the name include:
Madelyn Clare (1894–1975), American actressMadelyn Dunham (1922–2008), the American maternal grandmother of Barack ObamaMadelyn Pugh (1921–2011), television writer who worked on the I Love Lucy television seriesMadelyn Renee, American soprano formerly known as Madelyn Renée MontiMadelyn Vega, Puerto Rican journalist and attorneyMadelyn Lugo, Puerto Rican author and psychotherapistOther uses"Madelyn", a song by The Wonder Years from The Greatest Generation