This is a very underreported category simply because most statisticians don't even keep this. However, the ones listed are all confirmed. Two additions already this season.
Most Dunks in a Game
(B) 11 Flory Bidunga - Kokomo vs. McCutcheon 2022-23
(B) 8 Greg Oden - Lawrence North vs. Ben Davis 2005-06
(B) 6 Jack Benter - Brownstown vs. Salem 2022-23
(B) 6 Dominic James - Richmond vs. Plainfield 2004-05
(B) 6 Zach Odum - Terre Haute South vs. EV North 2007-08
(B) 6 Zach Odum - Terre Haute South vs. Rockville 2007-08
(B) 4 Gary Harris - Hamilton Southeastern vs. North Central 2010-11
(G) 1 Amber Harris - North Central vs. Kokomo 2005-06
Most Dunks in a Game
(B) 11 Flory Bidunga - Kokomo vs. McCutcheon 2022-23
(B) 8 Greg Oden - Lawrence North vs. Ben Davis 2005-06
(B) 6 Jack Benter - Brownstown vs. Salem 2022-23
(B) 6 Dominic James - Richmond vs. Plainfield 2004-05
(B) 6 Zach Odum - Terre Haute South vs. EV North 2007-08
(B) 6 Zach Odum - Terre Haute South vs. Rockville 2007-08
(B) 4 Gary Harris - Hamilton Southeastern vs. North Central 2010-11
(G) 1 Amber Harris - North Central vs. Kokomo 2005-06