The Portuguese star feels his young team-mate makes life easy for him at the Santiago Bernabeu as he describes the 22-year-old's qualities on the pitch
The Portugal international is enjoying a lively partnership with Ozil at the Bernabeu and said playing alongside the midfielder makes it easy.
"Mesut is a great player and it is good fun to play alongside him," Ronaldo told Sport 1.
"He is currently the best German player."
Nuri Sahin arrived from German champions Borussia Dortmund in the summer, but has yet to make his debut in La Liga for the Spanish side as he has been injured.
However, Ronaldo expects the Turkey international to do well.
"I knew Sahin before he arrived here because there has been plenty of talk about his qualities," added Ronaldo.
"I hope he can be back soon and help the team."
Speaking of the Bundesliga, Ronaldo said: "The German league has always maintained a very high level.
"There are many good players who play in Germany.
"Apart from England and Spain, the German Bundesliga is certainly the strongest."
Madrid play local rivals Getafe in La Liga on Saturday evening.