Adelheid Kofler née Schaschek (24 June 1889, Haugsdorf – 27 July 1985, Innsbruck) was an Austrian inventor, mineralogist, and ophthalmologist.

After attending the public school in Amstetten, Lower Austria, Adelheid Schaschek studied from 1903 to 1907 at the municipal girls' lyceum in Brno, Czech Republic, and from 1907 to 1911 at the University of Vienna.

Under the direction of Friedrich Johann Karl Becke, she worked on her doctoral dissertation on mineralogy and in 1913 she received her Ph.D. from the University of Vienna.

Developing these ideas further, the Koflers devised a microscale version of the Rast molecular weight method, with camphor and the unknown together on the heated stage.

Then Adelheid put two substances side-by-side on the stage and could both watch them melt separately and observe their interaction at the interface.