The Old Lady have struggled recently, following defeats against Udinese and Cagliari.
“Ranieri will still be Juventus Coach next year – there is no doubt about it,” he told the Corriere dello Sport.
“Claudio has three seasons left on his contract and we are in the habit of respecting our tacticians’ deals.
“I can’t see any reason why Ranieri shouldn’t be with us going into 2010-11.”