| Age | 77 (age at death) |
| Birthday | 2 November, 1866 |
| Birthplace | Viby, Närke, Sweden |
| Died | 27 October, 1944 |
| Place of Death | Uppsala, Sweden |
| Zodiac Sign | Scorpio |
| Nationality | Swedish |
| Occupation | Geologist |
Johan Rutger Sernander (2November 1866 – 27October 1944) was a Swedish botanist, geologist and archaeologist. He was one of the founders of the study of palynology which would later be developed by Lennart von Post, as well as a pioneer in the early Swedish natural conservation and ecology movements. He was among other societies a member of the Royal Swedish Academy of Sciences, the Royal Swedish Academy of Letters, History and Antiquities and Norwegian Academy of Science and Letters. Sernander was one of the founders of the Swedish Society for Nature Conservation in 1909, as well as its chairman during a number of the first years.
