The women's 400 metre freestyle event at the 1992 Summer Olympics took place on 28 July at the Piscines Bernat Picornell in Barcelona, Spain.
ðə wˈɪmɪnz fˈoːɹhˈʌndɹɪd mˈiːɾɚ fɹˈiːstaɪl ᵻvˈɛnt æt ðə nˈaɪntiːnhˈʌndɹɪd nˈaɪnti tˈuː sˈʌmɚɹ əlˈɪmpɪks tˈʊk plˈeɪs ˌɔn twˈɛnti ˈeɪt dʒuːlˈaɪ æt ðə pˈɪsiːnz bˈɜːnæt pˌiːkoʊənˈɛl ɪn bˌɑːɹsɪlˈoʊnə, spˈeɪn.