John Howard Dellinger (July 3, 1886 – December 28, 1962) was a noted American telecommunication engineer who discovered how solar flares caused fadeouts of short-wave radios (the Dellinger effect).

Dellinger was born in Cleveland, Ohio, first attended the Western Reserve University, in 1908 received his A.B.

From 1907-1948 Dellinger worked at the National Bureau of Standards as physicist; chief, radio section; and chief, Central Radio Propagation Laboratory.

From 1928-1929 he served as chief engineer of the Federal Radio Commission, and also served as a representative of the United States Department of Commerce on the Radio Advisory Committee (1922–1948).

degree from George Washington University, and in 1938 the IRE Medal of Honor "for his contributions to the development of radio measurements and standards, his researches and discoveries of the relation between radio wave propagation and other natural phenomena, and his leadership in international conferences contributing to the worldwide cooperation in telecommunications.