Martin Barner (19 April 1921 – 31 July 2020) was a German mathematician working in the fields of differential geometry and analysis. Barner received his doctorate in 1950 at the Albert-Ludwigs-University in Freiburg. From 1957, he was professor in Karlsruhe and from 1962 at his alma mater in Freiburg, where he retired in 1989. From 1963 to 1994, he was director of the Mathematical Research Institute of Oberwolfach and from 1968 to 1977 he was president of the German Mathematical Society.

Martin Barner
85th birthday in Königsfeld
Born	(1921-04-19)19 April 1921 Villingen, Germany
Died	31 July 2020(2020-07-31) (aged 99)
Scientific career
Fields	Differential geometry, Analysis
Thesis	Zur projektiven Differentialgeometrie der Kurvenpaare  (1950)
Doctoral advisor	Gerrit Door Bol
Doctoral students	Ulrich Pinkall

He died in July 2020 at the age of 99.^[1]