| Official Name: | Marengo, Washington |
| Pushpin Map: | Washington |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Washington |
| Subdivision Type2: | County |
| Subdivision Name2: | Adams |
| Timezone: | Pacific (PST) |
| Utc Offset: | -8 |
| Timezone Dst: | PDT |
| Utc Offset Dst: | -7 |
| Elevation Ft: | 1640 |
| Coordinates: | 47.0258°N -118.1886°W |
| Postal Code Type: | ZIP code |
| Postal Code: | 99169 |
| Area Code: | 509 |
| Blank Name: | GNIS feature ID |
| Blank Info: | 1511527 |
Marengo is an unincorporated community in Adams County, Washington. A line of the Union Pacific Railroad runs through the community.[1]
The community's name commemorates the Battle of Marengo.[2]