| Großer Dieckfluss | |||
| Map: |
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| Mouth Location: | Große Aue | ||
| Mouth Coordinates: | 52.5056°N 8.6562°W | ||
| Subdivision Type1: | Country | ||
| Length: | 37.5km (23.3miles) | ||
| Basin Size: | 179km2 | ||
The Großer Dieckfluss is a river of North Rhine-Westphalia, Germany. It flows into the Große Aue in Preußisch Ströhen.