Madisson is a spelling variant of Madison, an English surname that means "son of Maud", a medieval form of Matilda, "mighty in battle"; it has also been read as "son of Matthew". Madison became a girls' name after the 1984 film Splash and reached the US top 10, and the double-S spelling is a newer twist. Madisson entered the top 1000 for the first time in 2025, leaping from number 1182 in 2024 to 319.