| Year: | 1903 |
| Number: | 42-0 |
| Nominee 1: | |
| Name: | H E Durham |
| Gender: | M |
| Profession/Category: | Dr |
| City: | Kuala Lumpur |
| Country: | MY (MALAYSIA) |
| Nominee 2: | |
| Name: | Max Gruber |
| Gender: | M |
| Profession/Category: | prof hygiene |
| University: | Vienna |
| City: | Vienna |
| Country: | AT (AUSTRIA) |
| Motivation: | "for their conjoint discovery of the agglutinating effect of `immunune´ sera upon the kinds of bacteria employed in producung the immunity". |
| Nominator: |
|
| Name: | Ronald Ross |
| Gender: | M |
| Profession/Category: | prof tropical medicine, Nobel Laureate med 1902 |
| University: | University College |
| City: | Liverpool |
| Country: | GB (UNITED KINGDOM) |
| Evaluation: | No |