In the downtown district of Richmond, Indiana, a double explosion kills 41 and injures 150.

Richmond is a city in eastern Wayne County, Indiana, United States. Bordering the state of Ohio, it is the county seat of Wayne County. In the 2020 census, the city had a population of 35,720. It is the principal city of the Richmond micropolitan area. Situated largely within Wayne Township, its area includes a non-contiguous portion in nearby Boston Township, where Richmond Municipal Airport is located.

The Richmond, Indiana, explosion was a double explosion in the United States in 1968. It occurred at 1:47 PM EST on April 6, in downtown Richmond, Indiana. The explosions killed 41 people and injured more than 150. The primary explosion was due to natural gas leaking from one or more faulty transmission lines under the Marting Arms sporting goods store, located on the southeast corner of the intersection of 6th and Main streets. A secondary explosion was caused by gunpowder stored inside the building.