He is a chimpanzee. It is also interesting to note the fact that monkeys have tails; curious George does not.
Aloha. Answer: Nīele mākinikā [n-eye may-kee-nee-kay]A hui hou (until next time)
Yes, Curious George is a monkey. He is the pet of the man in the yellow hat.
Since he doesn't have a tail, he is either a chimp or a bonobo (a pygmy chimp)
He is not actually a monkey but a chimpanzee, which is an ape, not a monkey.