Lotte Loewe (November 7, 1900-unknown) was a German chemist known for her research in organic chemistry. Loewe received her doctorate in chemistry from the University of Breslau in 1937 and began her career there shortly thereafter, spending six years as a chemistry assistant from 1927 to 1933. She then moved to the University of Zurich for one year (1934) and the University of Istanbul for 21 years, from 1934 to 1955. Her last academic appointment was at the University of Basel, where she spent 6 years from 1955 to 1961. Loewe then became an industrial chemist in Basel, though she maintained a position as an assistant professor at the University of Freiberg. Throughout, her research concerned ascorbic acid reaction kinetics, uric acid, carotenoids, keto-enol tautomerism, and diazomethane reactions.
Loewe was a member of the German Academic Union, Swiss Academic Union, the German Chemical Society, the Swiss Chemical Society, and the Swiss Microanalytic Society. She was awarded the Bundesverdienstkreuz (Order of Merit of the Federal Republic of Germany) in 1955.