Röntgen or Roentgen may refer to:
Roentgen (unit), unit of measurement for ionizing radiation, named after Wilhelm Röntgen Wilhelm Röntgen (1845–1923), German physicist, discoverer of X-rays Abraham Roentgen (1711–1793), German cabinetmaker David Roentgen (1743–1807), German cabinetmaker, son of Abraham Roentgen Gerhard Moritz Roentgen (1795–1852), Dutch and German entrepreneur and engineer Engelbert Röntgen (1829–1897), German-Dutch violinist Heinrich Röntgen (1787–1813), German explorer Julius Röntgen (1855–1932), German-Dutch composer of classical music, son of Engelbert Röntgen Kevin Roentgen, musician, singer with American rock band Orson Roentgen (album), by Japanese singer Hyde
See also Röntgen rays, alternative name for x-rays Roentgenium, chemical element, atomic number 111 (previously unununium) Astronomical Roentgen Telescope