| Hochburg-Ach | |
| Pushpin Map: | Austria |
| Pushpin Mapsize: | 270 |
| Pushpin Map Caption: | Location within Austria |
| Coordinates: | 48.1306°N 12.8778°W |
| Subdivision Type: | Country |
| Subdivision Name: | Austria |
| Subdivision Type1: | State |
| Subdivision Name1: | Upper Austria |
| Subdivision Type2: | District |
| Subdivision Name2: | Braunau am Inn |
| Parts Style: | para |
| Leader Title: | Mayor |
| Leader Name: | Johann Reschenhofer |
| Elevation M: | 462 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Timezone Dst: | CEST |
| Utc Offset: | +1 |
| Utc Offset Dst: | +2 |
| Registration Plate: | BR |
| Postal Code Type: | Postal code |
| Postal Code: | 5122 |
| Area Code Type: | Area code |
| Area Code: | 07727 |
| Website: | www.hochburg-ach.at |
Hochburg-Ach is a municipality in the district of Braunau am Inn in the Austrian state of Upper Austria.
Hochburg-Ach lies in the Innviertel on the Germany border, directly opposite the Bavarian town of Burghausen. It lies east of the Salzach. About 42 percent of the municipality is forest and 52 percent farmland.