| Official Name: | Caotun Township 草屯鎮 |
| Subdivision Type: | Location |
| Government Type: | Urban township |
| Area Total Km2: | 104 |
| Population As Of: | February 2023 |
| Population Total: | 96838 |
| Caotun Township | |
| C: | 草屯鎮 |
| Hp: | Cǎotún Zhèn |
| W: | Ts'ao3-t'un2 Chen4 |
| Poj: | Chháu-tūn-tìn |
| Phfs: | Tshó-thùn-tsṳ́n |
| Hide: | no |
Caotun Township,[1] formerly transliterated as Tsaotun Township, is an urban township in the northwest of Nantou County, Taiwan.[2] It is the largest township in Taiwan by population.[3]
The area was historically known as Chháu-ê-tun (Chinese: 草鞋墩) with the present name adopted under Japanese rule in 1920.
The township comprises 27 villages: Beishi, Beitou, Bifeng, Bizhou, Duihe, Fuliao, Fuxing, Heping, Jialao, Mingzheng, Nanpu, Pingding, Pinglin, Shanglin, Shanjiao, Shichuan, Shuangdong, Tucheng, Xincuo, Xinfeng, Xinzhuang, Yanfeng, Yufeng, Yushi, Zhongshan, Zhongyuan and Zhongzheng.
The nearest train station to Caotun is the Yuanlin Station of the Taiwan Railway Administration in Changhua County.
Taichung City Bus route 108 have reach Nan Kai University of Technology, however 10km+10 TWD promotion are only applied to Taichung residents and eligible persons.