Line 3 of the Xuzhou Metro () is a rapid transit line in Xuzhou city, Jiangsu province, China. It is the third metro line to open in Xuzhou.
Phase 1 of Line 3 was opened on June 28, 2021. It is 18.13 km in length and fully underground.
Phase 2 of Line 3 opened on 3 December 2024. It added 6 stations (5 stations in the Northern extension and 1 station in the Southern extension) and a total of 8.13 km in length (1.57 km South extension and 6.56 km North extension). The South extension is elevated and the North extension is underground.