- Niels Ry·berg [neels ry-ber] /nils ˈrü bɛr/, 1860–1904, Danish physician: Nobel Prize 1903.
- Niels Ryberg (neːls ˈryber). 1860–1904, Danish physician; founder of phototherapy: Nobel prize for physiology or medicine 1903
- Danish physician. He won a 1903 Nobel Prize for developing a method of treating skin diseases with ultraviolet light.