Lilliana is an elaborated spelling of Liliana, an Italian and Spanish name that is read either as a form of "lily" or as a diminutive of Elizabeth, "my God is an oath". The double l ties it to Lillian and Lily, two names that American parents have embraced again this century. Lilliana climbed from number 931 in 2000 to a peak of number 262 in 2013 and has eased since to number 446 in 2025.