Harnden is a surname that is spelled with /hɑːndən/ in IPA phonetic transcription. The first sound, /h/, is voiceless glottal fricative, followed by the long vowel /ɑː/ and the consonant /n/. The final syllable, /dən/, consists of the voiced dental fricative /ð/ and the nasal consonant /n/. The spelling of the word is typically preserved, as it is a proper noun and not subject to changes in pronunciation based on context or dialect.