Sobo-Katamuki Quasi-National Park (祖母傾国定公園, Sobo-Katamuki Kokutei Kōen) is a Quasi-National Park in Ōita and Miyazaki Prefectures, Japan. Established in 1965, the park derives its name from Mount Sobo (1,756 m (5,761 ft)) and Mount Katamuki (傾山) (1,602 m (5,256 ft)). The Quasi-National Park borders two homonymous Prefectural Parks, namely the Sobo Katamuki Prefectural Natural Park (Ōita) and Sobo Katamuki Prefectural Natural Park (Miyazaki).

Related municipalities

• Miyazaki: Gokase, Hinokage, Nobeoka, Takachiho
• Ōita: Bungo-ōno, Saiki, Taketa