| Arrondissement of Oudenaarde | |
| Type: | Arrondissement |
| Coordinates: | 50.85°N 3.6°W |
| Subdivision Type: | Country |
| Subdivision Name: |  Belgium |
| Subdivision Type1: | Region |
| Subdivision Type2: | Province |
| Parts Type: | Municipalities |
| Parts Style: | para |
| P1: | 11 (until 2018) 10 (since 2019) |
| Unit Pref: | Metric |
| Area Total Km2: | 418.80 |
| Population Density Km2: | auto |
| Timezone1: | CET |
| Utc Offset1: | +1 |
| Timezone1 Dst: | CEST |
| Utc Offset1 Dst: | +2 |
The Arrondissement of Oudenaarde (;) is one of the six administrative arrondissements in the Province of East Flanders, Belgium. It is both an administrative and a judicial arrondissement. However, the Judicial Arrondissement of Oudenaarde also comprises the municipalities of Geraardsbergen, Herzele, Sint-Lievens-Houtem and Zottegem in the Arrondissement of Aalst.
The Administrative Arrondissement of Oudenaarde consists of the following municipalities:
Per 1 January 2019, the municipalities of Kruishoutem and Zingem merged into the new municipality of Kruisem.