The Salzburg Connection is a 1968 spy novel by the British-born writer Helen MacInnes. A British intelligence agent attempts to retrieve a box hidden in Austria containing a list of the names of Nazi collaborators left over from the war. Before long several other agencies are also after the prize.
A book review in The New York Times described the novel as "a fascinating exercise in wide-screen spymanship."
The book was a commercial success. It ranked third among the top ten best-selling works of fiction in the United States for the year 1968, according to Publishers Weekly.
In 1972 the novel was adapted into a film of the same title directed by Lee H. Katzin and starring Barry Newman and Anna Karina.