Aleksandr Semyonovich Feklisov (Russian: Александр Семёнович Феклисов; 9 March 1914 – 26 October 2007) was a Soviet spy, the NKVD Case Officer who handled Julius Rosenberg and Klaus Fuchs, among others.

Part of Feklisov's duties included recruiting espionage agent prospects from those sympathetic to the Communist Party of the United States and its auxiliary secret apparatus.

He stated that Rosenberg provided important top secret information about electronics and helped organize an industrial espionage ring for Moscow, but "didn't understand anything about the atom bomb."

Feklisov stated that Ethel Rosenberg, as a "probationer", did not meet directly with her Soviet agent handler.

[1] Feklisov was transferred back to the United States and became the Washington, D.C. Rezident, or KGB Station Chief, from 1960 to 1964.