Wolfgang Krätschmer (born 16 November 1942 in Berlin) is a German physicist.
Krätschmer studied physics in Berlin. After his Diplom he went to the Max Planck Institute for Nuclear Physics in Heidelberg and earned his PhD there in 1971 with a thesis on artificially etched tracks of accelerated heavy ions in quartz. In his career, he has worked on cosmic-ray heavy-ion tracks in lunar samples, as well as infrared and UV spectra of interstellar dust.