Ohio Expo Center & State Fair, Ohio Expo Center & State Fair hosts more than 175 events per year and is home of the annual Ohio State Fair. Each month, a variety of shows, expositions & competitions are held at the Ohio Expo Center.

Ohio-michigan Equipment Dealers Association, Ohio Michigan Equipment Dealers Association or OMEDA was established in 1916, by the name of Ohio Retail Implement Dealers Association, until the name was changed to OMEDA in 1996.

Ohio Linux, The biggest Free & Open Source conference in the Eastern part of the US is looking for proposals to talk about a variety of topics, all relating to the free and open use of computers.

Ohio Confederation of Teacher Education Organizations (OCTEO) , Ohio Confederation of Teacher Education Organizations is a non for profit organization having the office in Ohio State. The organization structure of OCTEO is regulated by the president and president-elect of the member organizations.