- a male given name, Scottish form of John.
- a suffix with the same meaning and properties as -an; -ian is now the more productive of the two suffixes in recent coinages, especially when the base noun ends in a consonant: Orwellian; Washingtonian.
- a variant of -an Etonian; Johnsonian
masc. proper name, Scottish form of John.
variant of suffix -an used with stem endings in -i, from Latin -ianus (-anus). In Middle English, frequently -ien, from words borrowed via French.