Janne Rydberg was a Swedish spectroscopist and physicist, whom the following are named after:
Rydberg constant Rydberg, a unit of energy, derived from the Rydberg constant, equal to half the Hartree energy Rydberg correction Rydberg formula Rydberg ionization spectroscopy Rydberg state Heavy Rydberg system Rydberg atom Rydberg matter Rydberg molecule Rydberg polaron Rydberg–Klein–Rees method Rydberg–Ritz combination principle
Others Mendel-Rydberg Basin Rydberg (crater)