Ronald Žlabur (b. 1976) is a Croatian actor and voice artist who dubs Kermit the Frog on the Ulica Sezam dub package.

Zlabur's most notable role is as the voice of SpongeBob SquarePants in the animated series and theatrical feature. Other dub credits include Chicken on Cow and Chicken, Eddy in Ed, Edd and Eddy, Hairball in Biker Mice from Mars, and principal roles in animated features such as Pixar's Up, the German feature Back to Gaya, and Tom & Jerry - Mission to Mars.