Iwatayama Monkey Park is a commercial park located in Arashiyama in Kyoto, Japan. The park is on Mt Arashiyama, on the opposite side of the Ōi River as the train station.
It is inhabited by a troop of over 120 Japanese macaque monkeys. The animals are wild but can be fed food purchased at the site.
The park is featured in an episode of the anime series K-On!