Kennedi is a feminine spelling of Kennedy, the Irish surname Ó Cinnéide, which means "helmeted head" or, in a less flattering reading, "misshapen head". In the United States the surname is linked above all to President John F. Kennedy, which gives it a touch of glamour, and the -i ending marks it as a girls' name. Kennedi ranked number 789 in 2000, peaked at number 387 in 2015 and has slid to number 709 in 2025.