| Image Coa: | Wappen von Ilmmünster.svg |
| Coordinates: | 48.4833°N 41°W |
| Image Plan: | Ilmmünster in PAF.svg |
| State: | Bayern |
| Region: | Oberbayern |
| District: | Pfaffenhofen a.d.Ilm |
| Verwaltungsgemeinschaft: | Ilmmünster |
| Elevation: | 437-471 |
| Area: | 13.89 |
| Postal Code: | 85304 |
| Area Code: | 08441 |
| Licence: | PAF |
| Gemeindeschlüssel: | 09 1 86 130 |
| Mayor: | Georg Ott[1] |
| Leader Term: | 2020 - 26 |
| Party: | CSU |
Ilmmünster is a municipality in the district of Pfaffenhofen in Bavaria in Germany. It is not quite known by many, but it has many interesting places to visit based on history.