(March 4, 1893 – June 1, 1969) an Austrian-American historian, sociologist and criminologist, who made significant contributions to modern Mexican history during his career at Columbia University.

Operation Tannenbaum ("Fir Tree"), known earlier as Operation Grün ("Green"),Weinberg 2005, A World At Arms, p. 174 was a planned invasion of Switzerland and Liechtenstein by the Axis Powers during World War II.

"" ("O fir tree"), known in English as "O Christmas Tree", is a German Christmas song.

Albert Tannenbaum (January 17, 1906 – November 1976), nicknamed Allie or Tick-Tock, was a Jewish-American hitman for Murder, Inc., the enforcement arm of the National Crime Syndicate, during the 1930s.

(born February 14, 1969) an American professional football analyst and former executive.