Addyson is a spelling variant of Addison, an English surname that means "son of Adam"; Adam itself comes from the Hebrew word for earth or man. The y spelling rode the Addison boom of the 2000s, which turned a surname into one of the top girls' names. In the United States Addyson entered the top 1000 in 2004, peaked at number 192 in 2010 and has declined since, leaving the top 1000 in 2022 and standing at number 1413 in 2025.