| Elias Salomon Nathan | |
| Pseudonym: | Dr. Essenna[1] |
| Birth Date: | 17 May 1807 |
| Birth Place: | Eutin, Duchy of Oldenburg |
| Death Place: | Hamburg, German Confederation |
| Alma Mater: | University of Kiel |
| Spouse: | Jeanette Segalla |
Elias Salomon Nathan (17 May 1807 – 5 July 1862) was a German author and physician.
Elias Salomon Nathan was born in Eutin, Duchy of Oldenburg, to Caroline and Salomon Aaron Nathan. He studied medicine at the University of Kiel, receiving his M.D. in 1830. He took part in the Polish campaign, and afterward settled in Hamburg as a physician.
In addition to his literary activity in medical science, he devoted himself to Jewish learning. Under the pseudonym "Dr. Essenna" he translated Joseph Salvador's Histoire des institutions de Moïse et du peuple hébreu into German, with an introduction by Gabriel Riesser. Under the same pseudonym he published Gedanken aus dem Tagebuche eines Juden über die Drei Grossen Propheten der Europäischen Geschichte.