The women's 400 metres event at the 1985 IAAF World Indoor Games was held at the Palais Omnisports Paris-Bercy on 19 January.
Results edit
| Rank | Name | Nationality | Time | Notes |
|---|---|---|---|---|
 |
Diane Dixon |  United States |
53.35 | |
 |
Regine Berg |  Belgium |
53.81 | |
 |
Charmaine Crooks |  Canada |
54.08 | |
| 4 | Antonella Ratti |  Italy |
55.30 | |
| 5 | Oddný Árnadóttir |  Iceland |
56.94 | |
| Giannina Otoya |  Peru |
DNS |