| Image Coa: | DEU Mariaposching COA.svg |
| Coordinates: | 48.8333°N 60°W |
| Image Plan: | Mariaposching in SR.svg |
| State: | Bayern |
| Region: | Niederbayern |
| District: | Straubing-Bogen |
| Verwaltungsgemeinschaft: | Schwarzach, Lower Bavaria |
| Elevation: | 316 |
| Area: | 19.61 |
| Postal Code: | 94553 |
| Area Code: | 09906 |
| Licence: | SR |
| Gemeindeschlüssel: | 09 2 78 149 |
| Mayor: | Martin Englmeier[1] |
| Leader Term: | 2020 - 26 |
| Party: | CSU |
Mariaposching (Mariapousching) is a municipality in the district of Straubing-Bogen in Bavaria, Germany. It is a member of the municipal association Schwarzach.
It is located on the river Danube.