Du Mu (Chinese: 杜牧; pinyin: Dù Mù;  803–852) was a Chinese calligrapher, poet, and politician who lived during the late Tang dynasty. His courtesy name was Muzhi (牧之), and sobriquet Fanchuan (樊川).

Du Mu was skilled in shi, fu and ancient Chinese prose. He is best known as the writer of sensual, lyrical quatrains featuring historical sites or romantic situations, and often on themes of separation, decadence, or impermanence.