Nan'ao Township (Chinese: 南澳鄕; pinyin: Nán'ào Xiāng) is a mountain indigenous township in the southern part of Yilan County, Taiwan.

The township was formerly the "Aboriginal Area" of Suō District, Taihoku Prefecture, during Japanese rule.

It was the site of the Sayun incident made famous through the movie Sayon's Bell.

Many residents of Aohua Village still speak the Japanese language in daily life.

Between Su'ao and Hualien City, to the south, this road is known as the Suhua Highway (蘇花公路), and it features some of the most dramatic oceanside scenery in Taiwan.