| Official Name: | Mace, Indiana |
| Pushpin Map: | USA Indiana Montgomery County |
| Pushpin Label: | Mace |
| Pushpin Map Caption: | Location in Montgomery County |
| Subdivision Type: | Country |
| Subdivision Name: | United States |
| Subdivision Type1: | State |
| Subdivision Name1: | Indiana |
| Subdivision Type2: | County |
| Subdivision Name2: | Montgomery |
| Subdivision Type3: | Township |
| Subdivision Name3: | Walnut |
| Established Date: | area_footnotes = [1] |
| Area Total Sq Mi: | 0.23 |
| Area Land Sq Mi: | 0.23 |
| Area Water Sq Mi: | 0.0 |
| Timezone: | Eastern (EST) |
| Utc Offset: | -5 |
| Timezone Dst: | EDT |
| Utc Offset Dst: | -4 |
| Coordinates: | 40.0089°N -86.7978°W |
| Elevation Ft: | 837 |
| Postal Code Type: | ZIP code |
| Postal Code: | 47933 (Crawfordsville |
| Area Code: | 765 |
| Blank Name: | FIPS code |
| Blank Info: | 18-45720[2] |
| Blank1 Name: | GNIS feature ID |
| Blank1 Info: | 2830469 |
Mace is an unincorporated community and census-designated place (CDP) in Walnut Township, Montgomery County, in the U.S. state of Indiana.
Mace, formerly called "Fredericksburg", was laid out in about 1840 by Frederick Long.[3] A post office was established at Mace in 1853, and remained in operation until it was discontinued in 1912.[4]
Mace is located in eastern Montgomery County. It is bordered to the south by Linnsburg. U.S. Route 136 passes through the community, leading northwest 6miles to Crawfordsville, the county seat, and southeast 10miles to Jamestown. Downtown Indianapolis is southeast of Mace.
According to the U.S. Census Bureau, the Mace CDP has an area of 0.23sqmi, all land.[1] It is drained to the north by an unnamed tributary of the Walnut Fork of Sugar Creek, which flows northwest to Sugar Creek at Crawfordsville and is part of the Wabash River watershed.