| Henrik Samuel Conrad Sjögren | |
| Birth Date: | 23 July 1899 |
| Birth Place: | Köping, Sweden |
| Death Place: | Lund, Sweden |
| Nationality: | Swedish |
| Occupation: | Ophthalmologist |
| Known For: | Sjögren syndrome |
| Alma Mater: | Karolinska Institute |
Henrik Samuel Conrad Sjögren (in Swedish ˈɧø̂ːɡreːn/;[1] 23 July 1899, Köping – 17 September 1986, Lund) was a Swedish ophthalmologist best known for describing the eponymous condition Sjögren syndrome. Sjögren received his medical degree in Stockholm 1927. His first experience with the syndrome was an encounter with a 49-year-old woman with arthritis and extreme dryness of the eyes and the mouth. He worked with his wife, Maria, to describe a total of 19 cases and presented these cases for his doctoral theses in 1933,[2] which was published at the Karolinska Institute and titled "On knowledge of keratoconjunctivitis"[3] that eventually served as the basis of identifying and naming of Sjögren's syndrome. He had one child, born in 1934, named Gunvor.