Hertha Sieverts-Doreck, née Sieverts (15 July 1889 – 30 March 1991), was a German paleontologist who studied and published her research about the marine animals called Cretaceous Crinoids.

Doreck focused on zoology, paleontology and geology during her time at the University of Berlin and she researched Cretaceous Crinoids for her dissertation, which she completed under the supervision of Josef Felix Pompeckj in 1927.

[3] After she was only able to find a series of short-term positions, she was finally hired at the Institute for Applied Geology in Bonn at a very low salary in 1930.

After five years, she got a training opportunity at the National Prussian Geological Institute in Berlin and was hired there in 1936 in the role of a scientific assistant.

The couple had two daughters, yet Hertha continued her active research efforts, publishing her results on Crinoids in the journal Zentralblatt for fourteen years.