Nanwan Monkey Island (Chinese: 南湾猴岛自然保护区; pinyin: Nánwān hóudǎo zìránbǎohùqū) is a state-protected nature reserve for macaque monkeys in Lingshui county on the south coast of Hainan, the southernmost province of China. While termed an island, the reserve is actually on the Nanwan peninsula bordering the Xincun harbour on the east and south.