| Image Coa: | DEU Diedorf COA.svg |
| Coordinates: | 48.35°N 56°W |
| Image Plan: | Diedorf in A.svg |
| State: | Bayern |
| Region: | Schwaben |
| District: | Augsburg |
| Elevation: | 485 |
| Area: | 33.21 |
| Postal Code: | 86420 |
| Area Code: | 08238, 0821 (Biburg, Kreppen, Lettenbach, Vogelsang) |
| Licence: | A |
| Gemeindeschlüssel: | 09 7 72 130 |
| Mayor: | Peter Högg[1] |
| Leader Term: | 2020 - 26 |
| Website: | www.markt-diedorf.de |
Diedorf is a municipality in the district of Augsburg, in Bavaria, Germany. It is situated on the river Schmutter, 9 km west of Augsburg city centre.
The municipality of Diedorf consists of the market town of Diedorf and eight villages and hamlets: Anhausen, Biburg, Hausen, Kreppen, Lettenbach, Oggenhof, Vogelsang, and Willishausen.
The paint manufacturer Keimfarben is headquartered here.