Companies based in Ohio

American petroleum refining, marketing, and transportation company

Swagelok Company is a $2 billion privately held developer of fluid system products, assemblies, and services for the oil and gas, chemical and petrochemical, semiconductor, and transportation industries.

thumb|right|Cintas delivery truck in Ann Arbor, Michigan thumb|Cintas delivery truck in Markham, ON

motor cycle of the American company Merkel

American firearms manufacturer

Coal mining company

jewellery retailer

full-service travel center chain in the United States