Dawen River (Chinese: 大汶河; pinyin: Dàwèn Hé) is a river in Shandong Province, China. The main branch, Mouwen River, of the river originates from Yiyuan County, flows through Xintai, Laiwu, and merges with Chaiwen River at Dawenkou. Then, it flows through Tai'an, Feicheng, empties into Dongping Lake which enters Yellow River. The section of the river from Dongping onwards is also known as Daqing River (Chinese: 大清河; pinyin: Dàqīng Hé).

In ancient times, this river was called the 'Wen', and it was the border between the State of Lu and the State of Qi.