| 1966 |
|---|
| SECTIONALS |
|---|
| SITE |
WINNER |
CLASS |
|---|
| Anderson | Anderson | |
| Angola | Eastside | |
| Bedford | Bedford | |
| Bloomington | Unionville | |
| Bluffton | Decatur Catholic | |
| Boonville | Boonville | |
| Brazil | Cloverdale | |
| Brownsburg | Mooresville | |
| Carmel | Carmel | |
| Chesterton | Valparaiso | |
| Columbus | Columbus | |
| Connersville | Brookville | |
| Covington | Turkey Run | |
| Crawfordsville | Coal Creek Central | |
| Crown Point | Crown Point | |
| East Chicago | East Chicago Washington | |
| Elkhart | Elkhart | |
| Evansville | Evansville Memorial | |
| Fort Wayne I | Fort Wayne South | |
| Fort Wayne II | Fort Wayne North | |
| Frankfort | Clinton Central | |
| Franklin | Greenwood | |
| Gary | Gary Roosevelt | |
| Greencastle | Bainbridge | |
| Greensburg | Greensburg | |
| Hammond | Hammond | |
| Huntingburg | Springs Valley | |
| Huntington | Huntington | |
| Indianapolis | Indianapolis Tech | |
| Indianapolis Coliseum | Indianapolis Howe | |
| Jeffersonville | New Albany | |
| Kendallville | Garrett | |
| Kentland | Fowler | |
| Knox | Knox | |
| Kokomo | Kokomo | |
| Lafayette Jeff | Lafayette Jeff | |
| LaVille | Bremen | |
| Lawrenceburg | Aurora | |
| Logansport | Logansport | |
| Madison | Madison | |
| Manchester | Manchester | |
| Marion | Marion | |
| Michigan City Elston | Michigan City Elston | |
| Milan | Sunman | |
| Muncie | Muncie South | |
| New Castle | Mount Vernon (Fortville) | |
| North White | Frontier | |
| Portland | Adams Central | |
| Princeton | North Posey | |
| Richmond | Richmond | |
| Rushville | Rushville | |
| Salem | North Central | |
| Seymour | North Vernon | |
| South Bend Washington | South Bend Central | |
| Southport | Beech Grove | |
| Sullivan | Shakamak | |
| Switz City | Linton-Stockton | |
| Tell City | Tell City | |
| Terre Haute | Terre Haute Garfield | |
| Vincennes Lincoln | Vincennes Lincoln | |
| Warsaw | Warsaw | |
| Washington | Washington | |
| Winchester | Union City | |
| Zionsville | Lebanon | |
| REGIONALS |
|---|
| SITE |
WINNER |
CLASS |
|---|
| Anderson | Anderson | |
| Columbus | Greensburg | |
| Connersville | Aurora | |
| Covington | Bainbridge | |
| East Chicago | East Chicago Washington | |
| Elkhart | Michigan City Elston | |
| Evansville | Evansville Memorial | |
| Fort Wayne | Fort Wayne South | |
| Huntingburg | Vincennes Lincoln | |
| Indianapolis | Indianapolis Tech | |
| Jeffersonville | North Vernon | |
| Kokomo | Kokomo | |
| Lafayette | Lebanon | |
| Logansport | Logansport | |
| New Castle | Richmond | |
| Terre Haute Garfield | Cloverdale | |
| SEMISTATES |
|---|
| SITE |
WINNER |
CLASS |
|---|
| Evansville | Cloverdale | |
| Fort Wayne | Michigan City Elston | |
| Indianapolis | Indianapolis Tech | |
| West Lafayette | East Chicago Washington | |
| STATE |
|---|
| SITE |
WINNER |
CLASS |
|---|
| Hinkle Fieldhouse | Michigan City Elston | |