Henrik Samuel Conrad Sjögren (UK: , US: , Swedish: [??ø?gre?n]; 23 July 1899, Köping – 17 September 1986, Lund) was a Swedish ophthalmologist best known for describing the eponymous condition Sjögren's syndrome.
Sjögren received his medical degree in Stockholm 1927 and in 1933 published a doctoral thesis at Karolinska Institutet titled "On knowledge of keratoconjunctivitis" that eventually served as the basis of identifying and naming of Sjögren's syndrome.
He had one child born in 1934 named Gunvor.
Henrik Sjögren should not be confused with his contemporary, Torsten Sjögren, after whom Sjögren–Larsson syndrome and Marinesco–Sjögren syndrome are named.