Dangtu County (simplified Chinese: 当涂县; traditional Chinese: 當涂縣; pinyin: Dǎngtu Xiàn) is the only county under the jurisdiction of Ma'anshan City in eastern Anhui Province, People's Republic of China.
Dangtu County has a long history of more than 2000 years as a county. It was called Danyang (丹阳) in the Qin Dynasty but during the Sui Dynasty, the county became known as "Dangtu" 当涂. A famous poet named Xie Tiao (谢朓) once praised Dangtu County as the place of beautiful mountains and rivers. Li Bai had come to Dangtu seven times and his uncle was the former governor of Dangtu County. There is a memorial to the famous Chinese poet, Li Bai (aka Li Po c.700-762), who is said to have drowned at Dangtu after attempting to embrace the reflection of the moon. Dangtu people have a sense of familiarity with many of the poems Li Bai wrote because the beautiful scenery he described in his poems are the actual places where the local people have lived all of their lives.