List of OHSAA baseball champions
The Ohio High School Athletic Association is the governing body of athletic programs for junior and senior high schools in the state of Ohio. It conducts state championship competitions in all the OHSAA-sanctioned sports.
Champions
| Year | D I / AAA | D II / AA | D III / A | D IV |
| 2019 | Cleveland St. Ignatius | Dayton Chaminade-Julienne | Coldwater | Toronto |
| 2018 | Olentangy Liberty | Dayton Chaminade-Julienne | Canfield South Range | Fort Loramie |
| 2017 | Jackson | Tallmadge | Champion | Minster |
| 2016 | Pickerington North | Defiance | Berlin Hiland | Newark Catholic |
| 2015 | Cincinnati Archbishop Moeller | Defiance | Central Catholic | Newark Catholic |
| 2014 | Jackson | Bloom-Carroll | Coldwater | Defiance Tinora |
| 2013 | Cincinnati Archbishop Moeller | Defiance | Wheelersburg | Newark Catholic |
| 2012 | Cincinnati Archbishop Moeller | Columbus St Francis De Sales | Wheelersburg | Minster |
| 2011 | Liberty Twp. Lakota East | Columbus St Francis De Sales | Central Catholic | Minster |
| 2010 | Lakewood St Edward | Plain City Jonathan Alder | Bellville Clear Fork | Fort Loramie |
| 2009 | Cincinnati Archbishop Moeller | Chardon Notre Dame-Cathedral Latin | Gnadenhutten Indian Valley | Hamler Patrick Henry |
| 2008 | Lakewood St Edward | Cuyahoga Falls Walsh Jesuit | Central Catholic | Hamler Patrick Henry |
| 2007 | West Chester Lakota West | Canfield | Heath | Fort Loramie |
| 2006 | Strongsville | Cuyahoga Falls Walsh Jesuit | Marion Pleasant | Newark Catholic |
| 2005 | Cincinnati Elder | Hebron Lakewood | Archbold | Gibsonburg |
| 2004 | Cincinnati Archbishop Moeller | Cuyahoga Falls Walsh Jesuit | New Albany | Newark Catholic |
| 2003 | Cincinnati St Xavier | Cincinnati Purcell Marian | St Henry | Newark Catholic |
| 2002 | Cleveland St Ignatius | Tallmadge | Heath | Newark Catholic |
| 2001 | Dublin Coffman | Chardon Notre Dame-Cathedral Latin | Marion Pleasant | Cincinnati Country Day |
| 2000 | Toledo Start | Washington CH Washington | Youngstown Ursuline | St Henry |
| 1999 | Cincinnati Elder | Cuyahoga Falls Walsh Jesuit | Cincinnati Madeira | St Henry |
| 1998 | Lakewood St Edward | Cincinnati Archbishop McNicholas | Plain City Jonathan Alder | Toronto |
| 1997 | Hamilton | Columbus Bishop Watterson | Dayton Oakwood | Defiance Ayersville |
| 1996 | GlenOak | Hamilton Badin | Wheelersburg | Columbus Bishop Hartley |
| 1995 | GlenOak | Wauseon | Bainbridge Paint Valley | Cincinnati Summit Country Day |
| 1994 | Toledo Start | Hebron Lakewood | Ontario | Steubenville Catholic Central |
| 1993 | Cincinnati Archbishop Moeller | Hebron Lakewood | Campbell Memorial | Cincinnati Country Day |
| 1992 | Defiance | Elyria West | Coldwater | Morral Ridgedale |
| 1991 | Fairfield | Columbus Bishop Watterson | Hamilton Badin | Rockford Parkway |
| 1990 | Upper Arlington | Urbana | Coldwater | |
| 1989 | Cincinnati Archbishop Moeller | Akron St Vincent-St Mary | Newark Catholic | |
| 1988 | Columbus Bishop Watterson | Youngstown Ursuline | Newark Catholic | |
| 1987 | Upper Arlington | Coldwater | Rockford Parkway | |
| 1986 | Cincinnati Western Hills | Akron St Vincent-St Mary | Toledo Ottawa Hills | |
| 1985 | Fairfield | Bellevue | Graysville Skyvue | |
| 1984 | Cincinnati Elder | Coldwater | Miller City | |
| 1983 | Hamilton | Coldwater | Ashtabula Sts John And Paul | |
| 1982 | Euclid | Urbana | Gahanna Columbus Academy | |
| 1981 | Worthington | Parma Heights Holy Name | Middletown Bishop Fenwick | |
| 1980 | Cincinnati Oak Hills | Reading | Anna | |
| 1979 | Oregon Clay | Columbus St Francis De Sales | Cardington-Lincoln | |
| 1978 | Cincinnati Elder | Coshocton | Hicksville | |
| 1977 | Cincinnati Western Hills | Cincinnati Deer Park | Miller City | |
| 1976 | Shaker Heights | Elida | Leipsic | |
| 1975 | Columbus West | Bryan | Lucasville Valley | |
| 1974 | Wickliffe | Reading | Middletown Bishop Fenwick | |
| 1973 | Cincinnati Elder | St Paris Graham | Portsmouth Sciotoville Community | |
| 1972 | Cincinnati Archbishop Moeller | Ironton | Anna | |
| 1971 | Findlay | Columbus Father Wehrle Memorial | Russia | |
| 1970 | Dayton Chaminade-Julienne | Cincinnati Lincoln Heights | ||
| 1969 | Columbus East | New Riegel | ||
| 1968 | East Cleveland Shaw | Old Fort | ||
| 1967 | Cincinnati Western Hills | Nelsonville-York | ||
| 1966 | Kettering Fairmont West | West Salem Northwestern | ||
| 1965 | Shaker Heights | Versailles | ||
| 1964 | Lima Senior | Baltimore Liberty Union | ||
| 1963 | Euclid | Powhatan Point | ||
| 1962 | North Bend Taylor | Van Wert Lincolnview | ||
| 1961 | Cleveland South | Baltimore Liberty Union | ||
| 1960 | Cincinnati Elder | Baltimore Liberty Union | ||
| 1959 | Cincinnati Elder | West Salem Northwestern | ||
| 1958 | Cincinnati Elder | Goshen | ||
| 1957 | Reading | Middleport | ||
| 1956 | Cincinnati Elder | Cincinnati Greenhills | ||
| 1955 | Cincinnati Elder | Lockland | ||
| 1954 | Mansfield Senior | Waverly | ||
| 1953 | Cincinnati Purcell Marian | Beavercreek | ||
| 1952 | Cincinnati Elder | Beavercreek | ||
| 1951 | Cincinnati Western Hills | Lima St Rose | ||
| 1950 | Cincinnati Withrow | Batavia Amelia | ||
| 1949 | Cincinnati Hughes | North Bend Taylor | ||
| 1948 | Cincinnati Western Hills | Cincinnati Sycamore | ||
| 1947 | Cleveland Heights | Columbus Hamilton Township | ||
| 1946 | Cleveland Lincoln | Reading | ||
| 1945 | Cincinnati Woodward | Plainville | ||
| 1944 | East Cleveland Shaw | Reading | ||
| 1943 | Cincinnati Elder | Leavittsburg | ||
| 1942 | Tiltonsville | Reading | ||
| 1941 | Cincinnati Withrow | Beavercreek | ||
| 1940 | Columbus North | Powhatan Point | ||
| 1939 | Canton McKinley | Pemberville | ||
| 1938 | Cincinnati Hughes | Sugar Grove Berne Union | ||
| 1937 | Canton McKinley | Holgate | ||
| 1936 | Norwood | Etna | ||
| 1935 | St. Bernard Roger Bacon | Brookville | ||
| 1934 | Cincinnati Withrow | Mayfield | ||
| 1933 | Warren Warren G Harding | Congress West-Salem | ||
| 1932 | Columbus South | Tiltonsville | ||
| 1931 | Cincinnati Woodward | Delphos Jefferson | ||
| 1930 | Martins Ferry | St Paris | ||
| 1929 | Columbus Central | Newcomerstown | ||
| 1928 | Columbus Aquinas | Centerville |