Speaking with TMZ Sports, Griffin said he "100 percent" believes Williamson will be one of the greatest dunkers in NBA history.
"If he keeps playing like he is, he's going to be a monster," Griffin said.
He was also asked if he thinks Williamson should compete in the dunk contest in his rookie season.
"He's going to have a lot of years to do it. If he feels comfortable, yeah for sure," Griffin said. "He's probably going to do some things that we haven't seen in a while."
Williamson will have the opportunity to showcase his talents alongside other top prospects at the NBA combine in Chicago this week.