| Maria Furnace | |
| Settlement Type: | Unincorporated community |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Pennsylvania |
| Subdivision Type2: | County |
| Subdivision Name2: | Adams |
| Subdivision Type3: | Township |
| Subdivision Name3: | Hamiltonban |
| Pushpin Map: | Pennsylvania |
| Population Density Km2: | auto |
| Timezone1: | EST |
| Utc Offset1: | -5 |
| Timezone1 Dst: | EDT |
| Utc Offset1 Dst: | -4 |
| Postal Code Type: | ZIP Code |
| Postal Code: | 17320 |
| Area Code: | 717 |
| Blank Name: | GNIS[1] ID |
| Blank Info: | 1180406 |
Maria Furnace is a South Mountain populated place on Toms Creek in Adams County, Pennsylvania, United States, west of Fairfield, that was the location of an 1822 blast furnace until operations were moved to Caledonia. The remains of the original blast furnace ("Maria Furnace") are located at coordinates: 39|46|30.64 N, 77|24|25.98 W. The remains consist of a pile of rocks in a small wooded area overgrown with vegetation.