Francis Stephen Wagner, former Hungarian diplomat and subject cataloguer at the Library of Congress, died on April 14, 1999, at the age of 88.

Wagner, who had received three doctoral degrees (in history, philosophy, and literature) from Hungary's University of Szeged, taught at the Budapest Teachers College and served (1946–48) as consul general in Czechoslovakia.

Wagner arrived in the United States in 1949 and worked in various jobs while learning English. He ultimately joined the Library of Congress, where he worked for 29 years.

Author of several books, Wagner was also a contributor to the AHA publication, Guide to Historical Literature.

Survivors include his wife, Irene, and a daughter, Christina.