| Nomination for Nobel Prize in Physiology or Medicine | 
| Year: | 1903 | 
| Number: | 44 - 0 | 
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| Nominee 1: 
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| Name: | Santiago  Ramon y Cajàl | 
| Gender: | M | 
| Year, Birth: | 1852 | 
| Year, Death: | 1934 | 
| Profession: | prof | 
| University: | Madrid | 
| City: | Madrid | 
| Country: | SPAIN (ES) | 
| Awarded the Nobel Prize in Physiology or Medicine 1906 | 
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| Nominee 2: 
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| Name: | Élie  Metchnikoff | 
| Gender: | M | 
| Year, Birth: | 1845 | 
| Year, Death: | 1916 | 
| Profession: | (vice) director | 
| University: | Pasteur Institute (Institut Pasteur) | 
| City: | Paris | 
| Country: | FRANCE (FR) | 
| Awarded the Nobel Prize in Physiology or Medicine 1908 | 
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| Nominee 3: 
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| Name: | Robert  Koch | 
| Gender: | M | 
| Year, Birth: | 1843 | 
| Year, Death: | 1910 | 
| Profession: | prof | 
| University: | Robert Koch Institute for Infectious Diseases | 
| City: | Berlin | 
| Country: | GERMANY (DE) | 
| Awarded the Nobel Prize in Physiology or Medicine 1905 | 
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| Motivation: | S. Ramon y Cajal: Second choice, together with I. Mechnikov, after R. Koch. No specific motivation given.
I. Mechnikov: Second choice after R. Koch. No specific motivation given.
R. Koch: Extensive work on tuberculosis and malaria; discovery of the cholera vibrio. | 
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| Nominator: 
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| Name: | M  Ide | 
| Profession: | prof pharmacology | 
| University: | Louvain | 
| City: | Leuven (Louvain Löwen) | 
| Country: | BELGIUM (BE) | 
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| Comments: | University: Originally the "Königlich Preußisches Institut für Infektionskrankheiten" or "Institut für Infektions-Krankheiten",
the name was in 1912 changed to "Das Robert Koch-Institut". | 
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