Madisyn is a modern respelling of Madison, an English surname that means "son of Maud", Maud being a medieval form of Matilda, "mighty in battle". Madison took off as a girls' name after the 1984 film Splash, and creative spellings like Madisyn followed. Madisyn ranked number 454 in 2000, peaked at number 338 in 2010 and has slipped to number 1332 in 2025, outside the top 1000 since 2023.