Daniel Rumpius (or Daniel Rump; 1549 – c. 1600) was a German Lutheran theologian, minister and hymnwriter.
Rump worked in Stepenitz, now part of Marienfließ, and at the nuns' monastery there, Nonnenstift Marienfließ [de] which had turned Protestant. He wrote several sacred songs and hymns, partly adapted from secular models. He suffered a fire in his village, losing his property, and was severely sick. Reconvalescent, he began again to write poetry, calling it "singing songs with tears" ("mit Tränen Lieder zu singen").[1]