| 2022 | Milk Quality and Products | 4th | Adams, Amanda |
| 1988 | Agronomy | 3rd | Arbogast, Elmer |
| 1997 | Poultry Management | 5th | Bahan, Jennifer |
| 2014 | Agronomy | 2nd | Bahan, Taylor |
| 2024 | Agronomy | 5th | Balzer, Kinley |
| 2013 | Agronomy | 2nd | Bayer, Molly |
| 2009 | Agronomy | 3rd | Bevis, Robert |
| 1982 | Agronomy | 5th | Bialecki, John |
| 2021 | Job Interview | 2nd | Brestle, Kaylee |
| 1999 | General Livestock | 5th | Brill, Becky |
| 1979 | Agronomy | 2nd | Brill, Gary |
| 1978 | Agronomy | 4th | Brill, Gary |
| 1976 | Poultry Management | 1st | Brill, Jeff |
| 1975 | Poultry Management | 5th | Brill, Jeff |
| 2005 | Agronomy | 3rd | Brill, Luke |
| 1982 | Poultry Management | 1st | Brill, Richard |
| 1979 | Poultry Management | 2nd | Brill, Richard |
| 2023 | Agronomy | 2nd | Brown, Aubrey |
| 1985 | Poultry Management | 2nd | Buettner, Richard |
| 1984 | Poultry Management | 3rd | Buettner, Richard |
| 2003 | Agronomy | 1st | Bugg, Mark |
| 1998 | Agronomy | 3rd | Bugg, Scott |
| 1982 | Poultry Management | 3rd | Buyer, Kevin |
| 1981 | Poultry Management | 1st | Buyer, Kevin |
| 2017 | Agronomy | 1st | Chadwick, Abby |
| 2017 | Agronomy | 4th | Chadwick, Sarah |
| 1998 | Equine Management | 1st | Clady, Holli |
| 1996 | Public Speaking | 2nd | Clady, Holli |
| 1995 | Public Speaking | 1st | Clady, Holli |
| 1982 | Poultry Management | 5th | Clevenger, Mark |
| 2007 | Agronomy | 1st | Conrad, Adam |
| 2006 | Agronomy | 2nd | Conrad, Adam |
| 1982 | Mammals | 5th | Cox, Ken |
| 1981 | Mammals | 4th | Cox, Ken |
| 2013 | Agronomy | 4th | Davis, Austin |
| 2000 | Agronomy | 5th | Davis, Bethany |
| 2004 | Agronomy | 1st | Davis, Jake |
| 2009 | Greenhand Quiz | 2nd | DePauw, Ann |
| 2024 | Job Interview | 1st | Dickey, Chloe |
| 2000 | Agronomy | 3rd | Disbennett, Robert |
| 2010 | Agronomy | 1st | Dresback, Kyle |
| 2011 | Agronomy | 2nd | Dysert, Kayla |
| 1998 | Agronomy | 2nd | Evans, Jared |
| 1997 | Agronomy | 4th | Evans, Jared |
| 1982 | Rural Soils | 2nd | Foos, Bill |
| 2011 | Agronomy | 1st | Foos, Skyler |
| 1993 | Agronomy | 1st | Foreman, Murphy |
| 1992 | Agronomy | 3rd | Foreman, Murphy |
| 1991 | Agronomy | 4th | Foreman, Murphy |
| 2014 | Public Speaking | 3rd | Furer, Shelby |
| 1987 | Rural Soils | 1st | Geyer, Allen |
| 1994 | Agronomy | 1st | Goodwin, Tim |
| 2014 | Rural Soils | 1st | Gravatt, Justin |
| 2011 | Agronomy | 3rd | Gravatt, Justin |
| 2007 | Agronomy | 4th | Gravatt, Kyle |
| 2006 | Agronomy | 5th | Gravatt, Kyle |
| 2022 | Agronomy | 1st | Hall, Chloe |
| 1978 | Poultry Management | 4th | Hall, Dan |
| 1976 | Poultry Management | 4th | Hall, Denny |
| 2015 | Agronomy | 3rd | Hall, Grace |
| 1982 | Mammals | 3rd | Hall, Mike |
| 1988 | Agronomy | 1st | Hines, Clint |
| 1987 | Agronomy | 3rd | Hines, Clint |
| 2022 | Agronomy | 5th | Holloway, Cenlee |
| 2024 | Agronomy | 3rd | Howald, Zach |
| 2013 | Agronomy | 1st | Ingles, Kolton |
| 2022 | Agronomy | 2nd | Jolliff, Glade |
| 2002 | Meats Evaluation and Technology | 4th | Jolliff, James |
| 1988 | Agronomy | 2nd | Karcher, Doug |
| 1987 | Agronomy | 5th | Karcher, Doug |
| 1980 | Agronomy | 2nd | Kidwell, Steve |
| 1979 | Agronomy | 5th | Kidwell, Steve |
| 2015 | Agronomy | 2nd | Kramer, Robert |
| 2000 | Equine Management | 4th | Kusey, Sarah |
| 2004 | Agronomy | 4th | Lowe, Rusty |
| 1999 | Poultry Management | 4th | MacFarlane, Kate |
| 1978 | Poultry Management | 1st | Oman, Dave |
| 2009 | Agronomy | 2nd | Oman, Isaac |
| 2008 | Agronomy | 2nd | Oman, Isaac |
| 1984 | Public Speaking | 1st | Parish, Barb |
| 1983 | Public Speaking | 1st | Parish, Barb |
| 1982 | Public Speaking | 2nd | Parish, Barb |
| 1981 | Public Speaking | 1st | Parish, Barb |
| 2011 | Poultry Management | 3rd | Pfeiffer, Lindsey |
| 2017 | Agronomy | 2nd | Plotner, Grayson |
| 2016 | Agronomy | 1st | Plotner, Grayson |
| 2021 | Agricultural Power Diagnostics | 3rd | Plotner, Mack |
| 2021 | Agronomy | 3rd | Plotner, Mack |
| 2003 | Agronomy | 2nd | Powers, Talyn |
| 2015 | Agronomy | 1st | Ramsey, Mikaela |
| 2023 | Agronomy | 4th | Rensel, Kaylee |
| 2013 | Agronomy | 5th | Rhodeback, Jordyn |
| 2012 | Agronomy | 3rd | Rhodeback, Jordyn |
| 1999 | General Livestock | 2nd | Ridge, Lance |
| 2009 | Agronomy | 4th | Ross, Matt |
| 2014 | Poultry Management | 2nd | Shawver, Alexis |
| 2014 | Agronomy | 3rd | Shawver, Madison |
| 2004 | Agronomy | 2nd | Sheets, Brett |
| 2009 | Agronomy | 5th | Shepherd, Michelle |
| 1985 | Mammals | 3rd | Sims, Rick |
| 2019 | Agronomy | 1st | Smith, Kaylee |
| 2018 | Agronomy | 3rd | Smith, Kaylee |
| 2018 | Job Interview | 3rd | Smith, Kaylee |
| 2018 | Public Speaking | 3rd | Smith, Kaylee |
| 2007 | Agronomy | 3rd | Smith, Tyler |
| 2006 | Agronomy | 4th | Smith, Tyler |
| 2024 | Agronomy | 4th | Spriggs, Reese |
| 2002 | Wildlife Management | 4th | Springer, Craig |
| 2023 | Agronomy | 1st | Stacklin, Allison |
| 2016 | Agronomy | 5th | Stimmel, Josie |
| 2010 | Job Interview | 4th | Stofcheck, Reagan |
| 2021 | Agronomy | 4th | Taylor, Lilly |
| 2022 | Agronomy | 4th | Taylor, Madelyn |
| 2017 | Agronomy | 3rd | Wedding, Carter |
| 2003 | Agronomy | 4th | Welch, Zach |
| 2023 | Equine Management | 2nd | Wills, Layni |
| 2015 | Agronomy | 4th | Wolfe, Claire |
| 2019 | Agronomy | 4th | Wolfe, Dean |
| 2005 | Agronomy | 2nd | Zasadzinski, Tara |
| 2023 | Agronomy | 3rd | Zimmerman, Madelyn |
| 2019 | Agronomy | 3rd | Zwayer, Avery |
| 2018 | Agronomy | 1st | Zwayer, Avery |
