Darol Kenneth Froman (October 23, 1906 – September 11, 1997) was an American physicist who served as the deputy director of the Los Alamos National Laboratory from 1951 to 1962.

He completed his Doctor of Philosophy (Ph.D.) thesis there on A Photographic Method of Determining Atomic Structure Factors in 1930, under the supervision of Arthur Compton.

[1][2] During the summer months he joined Joyce C. Stearns at Mount Blue Sky or Echo Lake Park to study cosmic rays.

In 1941, he became head of the Mount Evans High Altitude Laboratory, working on cosmic ray research,[2] and taught physics at the University of Denver from 1941 to 1942.

He was one of the earliest arrivals at the Manhattan Project's Los Alamos Laboratory in New Mexico, where he was head of the P-4 (Electronic) Group in Robert Bacher's P (Physics) Division.

When the Laboratory was reorganized to concentrate on an implosion-type nuclear weapon in August 1944, he became head of the G-4 (Electric Method) Group in Bacher's G (Gadget) Division.

[8] In 2009, Danny B. Stillman, a former head of intelligence at the Los Alamos National Laboratory, and Thomas C. Reed, a weapons designer at the Lawrence Livermore National Laboratory and a Secretary of the Air Force, published a book titled The Nuclear Express, in which they presented unsubstantiated allegations that an unnamed American scientist, easily identified as Froman, was a KGB spy who gave the Teller-Ulam design to the Soviet Union.