Marie-Therese Mackowsky (December 7, 1913 - August 4, 1986) was a German mineralogist known for her research in coal geology and her prolific writing.
Mackowsky was born in Koblenz and was educated at the University of Freiburg, the University of Königsberg, and the University of Bonn. She earned her doctorate in 1938 with a dissertation on the properties of garnet, and began working at the Syndicate for Mining Interests in 1940. She was promoted to its director of the section of mineralogy and petrology and retired at the end of 1978, having spent her entire career at the Syndicate. She began her teaching career as a visiting professor in 1957, supervising doctoral students and teaching coal petrography and technical mineralogy at the University of Münster. Throughout her career, she published 107 scientific pieces and translated extensively.