Bucyrus-Erie was an American surface and underground mining equipment company. It was founded as Bucyrus Foundry and Manufacturing Company in Bucyrus, Ohio, in 1880. Bucyrus moved its headquarters to South Milwaukee, Wisconsin, in 1893. In 1927, Bucyrus merged with the Erie Steam Shovel Company to form Bucyrus-Erie. In 1997, it was renamed Bucyrus International, Inc. In 2010 the enterprise was purchased by Caterpillar in a US$7.6 billion transaction that closed on July 8, 2011. At the time of its acquisition, the Bucyrus product line included a range of material removal and material handling products used in both surface and underground mining.

Bucyrus is a city in the U.S. state of Ohio and the county seat of Crawford County, located in northern Ohio approximately 28 miles (45 km) west of Mansfield and 66 miles (106 km) southeast of Toledo. The population was 11,684 at the time of the 2020 census. The city is the largest in Crawford County, and the center of the Bucyrus Micropolitan Statistical Area.