AB cum laude, City College of New York, 1928. AM, Columbia University, 1934. Doctor of Philosophy, New York University, 1973.
Moss made two memorable appearances in Bob Hope films, as Hope"s Casablanca contact in the espionage spoof My Favorite Spy and as a conniving Venetian doge in Casanova"s Big Night. He played Prospero in Margaret Webster"s 1945 production of Shakespeare"s The Tempest for a combined total of 124 performances, the longest run of the play in Broadway history. He played Doctor Fabian in Cabin B-13 on Columbia Broadcasting System radio in 1948-1949, played in Cafe Istanbul on American Broadcasting Company radio in 1952, was Ahmed on Stella Dallas, was Philip Cameron in Against the Storm and was the first voice of the character of Ted White on the radio serial, The Guiding Light, from April 1948 to May 1949.
Moss appeared in two science fiction projects, the feature film The 27th Day (1957) as The Alien, and later on television in Star Trek (1966) as mysterious actor Anton Karidian, alter-ego of the tyrannical Government.
Kodos of Tarsus IV, in the episode "The Conscience of the King". He appeared in the original Broadway production of the Hal Prince/Stephen Sondheim musical Follies, playing impresario Dimitri Weismann.
He also played in The Rifleman as the school teacher, Mr. Griswald, and as Chief Lonespear in Bonanza episode "In Defense of Honor" in 1968.
Arnold Moss died from lung cancer aged 79 in New York City on December 15, 1989.
Member American Federation of television and Radio Artists (vice president New York chapter), Players, American Theatre Association, Academy Motion Picture Arts and Sciences (national visiting scholar 1983-1984), Phi Beta Kappa (president City College of New York Gamma chapter 1955-1956, president Middle Atlantic District 1988-1989).
Married Stella Reynolds, June 3, 1933. Chidren: Jeffrey Arnold, Andrea.