List of Famous people named Arnold

Arnold Lang was a Swiss naturalist, a comparative anatomist and student of German biologist Ernst Haeckel.

Arnold Orville Beckman was an American chemist, inventor, investor, and philanthropist. While a professor at California Institute of Technology, he founded Beckman Instruments based on his 1934 invention of the pH meter, a device for measuring acidity, later considered to have "revolutionized the study of chemistry and biology". He also developed the DU spectrophotometer, "probably the most important instrument ever developed towards the advancement of bioscience". Beckman funded the Shockley Semiconductor Laboratory, the first silicon transistor company in California, thus giving rise to Silicon Valley. After retirement, he and his wife Mabel (1900–1989) were numbered among the top philanthropists in the United States.

Arnold Kübler was a Swiss journalist and writer. He was the editor-in-chief of the Zürcher Illustrierte and of the cultural magazine Du. In his later career he also acted as a one-man cabaret.

Arnold Angelus Schölzel is a German editor and former defector, currently the editor-in-chief of the far-left newspaper Junge Welt. Prior to 1989, Schölzel worked at Humboldt University in East Berlin, and also was an informant for the East German domestic intelligence agency, the Stasi.