Kosrap Township (Uyghur: كوسراپ يېزىسى, Kosrap Yëzisi; Chinese: 库斯拉甫乡; pinyin: Kùsīlāfǔ Xiāng) is a historic township of Akto County in Xinjiang Uygur Autonomous Region, China.

[1] All the residents of the former Kosrap Township migrated to Dayasdun (大亚斯墩) in Zepu County.

Meanwhile, the Tong'an Township (桐安乡) was established in Dayasdun of Zepu County on August 27, 2018, its seat ia at Yengavati Village (英阿瓦提村).

In September 1954, the Kizilsu Kyrgyz Autonomous Prefecture was established and Kosrap was transferred to Qarlung Township of Akto County from Taxkorgan.

On August 27, 2018, Kosrap was merged into Qarlung,[1] while Tong'an Township (桐安乡) was formed in Dayasdun.