Tony Bennett: I Didn't Collapse ... It Was the OTHER Tony Bennett!

Tony Bennett (the singer) is clearing up some Tony Bennett confusion -- clarifying it was OTHER Tony Bennett (the coach) who collapsed at the NCAA tourney Thursday ... and he (the singer) is just fine.

Tony Bennett (the coach) collapsed on the sideline as his Virginia team was taking on Hampton in the 1st round of March Madness. The good news ... doctors say he was just dehydrated and will be fine.

But when word of Bennett's (the coach) medical scare made its way across social media, many people confused him for the singer ... so Tony (the singer) decided to clear things up once and for all.

"I wanted to let all my fans know that Im ok," Tony write ... "Glad to hear UVA coach Tony Bennett is fine after his fall. Congrats @UVAMensHoops on the win!"