State of Ohio
http://statejobs.ohio.gov/applicant/index.asp

Bank One College Opportunities
http://www.bankone.com/about/careers/college/

Dow Chemical
http://www.dow.com/Homepage/index.html

Ohio Community Service Counsel
http://www.state.oh.us/ohiogcsc/gcsc-jobs.htm

Ohio Newspapers Foundation
http://www.ohionews.org/interndir.html

Honda of America
http://www.ohio.honda.com/employment/opportunities/coop/index.asp

Ohio Legislative Internship Program
http://www.lsc.state.oh.us/internship/

Ohio Department of Natural Resources Internship List
http://www.dnr.ohio.gov/jobs/internships.htm 

Internship Opportunities within the Federal Government
http://www.house.gov/watt/intern04.htm

Columbus Zoo
http://www.colszoo.org/jobs_vols/mentorship.html

Longaberger
http://www.longaberger.com

Internship Program Search Engine
http://internships.wetfeet.com/SearchInternships.asp

Walt Disney World
http://www.wdwcollegeprogram.com/html_home/index-ie.html

U.S. Census Bureau
http://www.census.gov/hrd/www/vacancy/intern.html