| Native Name: | Préfecture du Logone Occidental |
| Conventional Long Name: | Logone Occidental Prefecture |
| Common Name: | Logone Occidental |
| Subdivision: | Prefecture |
| Nation: | Chad |
| Government Type: | Prefecture |
| Capital: | Moundou |
| Political Subdiv: | [1]
|
| Year Start: | 1962 |
| Year End: | 1999 |
| Event Start: | Established[2] |
| Date Start: | 9 January |
| Event End: | Disestablished |
| Date End: | 1 September |
| Era: | Cold War |
| Flag: | Flag of Chad |
| P1: | Logone Prefecture |
| Flag P1: | Flag of Chad.svg |
| S1: | Logone Occidental Department |
| Flag S1: | Flag of Chad.svg |
| Stat Year1: | 1993 |
| Stat Area1: | 8695 |
| Stat Pop1: | 455489 |
| Footnotes: | Area and population source: |
Logone Occidental was one of the 14 prefectures of Chad. Located in the southwest of the country, Logone Occidental covered an area of 8,695 square kilometers and had a population of 455,489 in 1993. Its capital was Moundou.