I got a question for you: While Mayhew portrayed Chewbacca in Star Wars: The Force Awakens, he was not in Star Wars: The Last Jedi. Mayhew retired from playing Chewbacca due to health issues. Joonas Suotamo, who split time with Mayhew on Star Wars: The Force Awakens, took over portraying Chewbacca.

Answer this question: who plays chewbacca in star wars the last jedi?
Let's think first:
The important part for answering this question is: Joonas Suotamo, who split time with Mayhew on Star Wars: The Force Awakens, took over portraying Chewbacca.
Therefore, the answer is Joonas Suotamo.