Maddison is a spelling variant of Madison, an English surname that means "son of Maud" or "son of Matthew". The double d brings the name closer to the nickname Maddie that most girls with it end up using. Maddison has been in the US top 1000 since 2000, reached its best rank of number 281 in 2009 and stands at number 439 in 2025, far behind the main spelling Madison but holding its ground.