Tonzang Township () is a township in Tedim District, Chin State of Myanmar. The 3,471.24-square-kilometre Tonzang Township is bordered by Tedim Township in the south, Kale Township of the Sagaing Division in the south-east, Tamu Township of the Sagaing Division in the north-east, the Indian state of Manipur in the north and the Indian state of Mizoram in the west. The township is primarily inhabited by Zomi and Zo people.
On 11-12 May, 2024, Tatmadaw airstrikes destroyed homes, a Catholic church, and a Baptist church in Tonzang Township.
The capital city of Tonzang Township is Tonzang. Tonzang Township is divided in 32 regions called villages:
According to the 2014 Myanmar census, Tonzang Township had a population of 20,722. The median age was reported to be 17.5 years old. There were 95 males per 100 females, and males had a higher literacy rate than females at 93.1% and 81.8%, respectively. The 3,411 households had a mean household size of 5.9 persons. The majority of households use firewood for cooking rather than electricity.