The Italian tactician led the Bianconeri to their second successive Serie A title success with a 1-0 home win against Palermo on Sunday.
"I don't want to be boring but I think every coach has had a decisive impact on my career development," Buffon told FIFA.com.
"I have to say, though, that Antonio Conte is definitely the best coach I've worked with.
"In a short space of time he's managed to breathe new life into a team that in two seasons could do no better than seventh place. And he was a winner straightaway."
Buffon has been at Juventus since 2001 and has won the Scudetto four times.