Background: The Gauleiter were the top Nazi regional leaders. There were 43 of them in 1941. The illustrations in Column 1 are from Julius Streicher, Reichstagung in Nürnberg 1934 (Berlin: Vaterländischer Verlag C. A. Weller. 1934). These were studio portraits. Those in Column 2 are from Das Buch der deutschen Gauen. Fünf Jahre nationalsozialistische Aufbauleistung (Bayreuth: Gauverlag Bayerische Ostmark, 1938). This was a book with a chapter on each Gau, usually with a picture of the Gauleiter. In most cases, the Gauleiter is shown doing something: giving a speech, visiting citizens, etc. Column 3 has pictures from other sources. This is not a complete list of Gauleiter.
There is a useful chart of Gauleiter on German Wikipedia. Anther collection of Gauleiter photographs is available from the United States Holocaust Memorial Museum (search for “Gauleiter”). An enormous amount of information on Nazi Gauleiter is available in the three-volume Gauleiter: The Regional Leaders of the Nazi Party and their Deputies, 1925-1945, by Michael D. Miller and Andreas Schulz.
Many photographs of Gauleiter are available for inspection on Getty Images.
The source: Various.
A Gallery of Gauleiter
1934 Photos from Reichstagung Nürnberg 1934
1938 Photos from Das Buch der deutschen Gauen
Other Photos
Name and Gau
Helmuth Brückner was Gauleiter of Silesia (Schlesien) from 1925 to the end of 1934, at which point he was expelled from the NSDAP in connection with the Röhm affair.
Josef Bürckel was Gauleiter of Saarpfalz (later renamed Westmark) from 1935 to 1944, when he committed suicide. He also served as Gauleiter of Vienna from 1939-1940.
Joachim Albert Eggeling was Gauleiter of Halle-Merseberg from 1937-1945.
August Eigruber was Gauleiter of Oberdonau from 1938-1945.
Picture source: Illustrierter Beobachter, #38/1938.
Friedrich Karl Florian was Gauleiter of Düsseldorf from 1930-1945.
Albert Forster was Gauleiter of Danzig from 1930-1039, after which he headed Gau Danzig-Westpreußen until 1945.
Third picture source: Illustrierter Beobachter, #45/1940.
Odilo Globocnik was Gauleiter of Vienna from 1938-1939. He had a rather short career in the office, having alienated lots of people, and was replaced by Josef Bürckel
Picture source: Illustrierter Beobachter, #39/1938.
Joseph Goebbels, alongside his other positions, was Gauleiter of Berlin from 1926-1945.
Joseph Grohé was Gauleiter of Köln-Aachen from 1931-1945.
Third picture source: Illustrierter Beobachter, #2/1941.
Karl Hanke was Gauleiter of Niederschlesien from 1941-1945.
Picture source: Illustrierter Beobachter, #7/1941.
Otto Hellmuth was Gauleiter of Mainfranken from 1928-1945.
Friedrich Hildebrandt was Gauleiter of Mecklenburg-Schwerin from 1925-1945.
Franz Hofer was Gauleiter of Tirol from 1938-1945.
Picture source: Illustrierter Beobachter, #41/1938.
Rudolf Jordan was Gauleiter of Halle-Merseburg from 1931-1937. He then switched to Gau Magdeburg-Anhalt from 1937-1945.
Hugo Jury was Gauleiter of Niederdonau from 1938-1945.
Picture source: Illustrierter Beobachter, #43/1938.
Karl Kaufmann was Gauleiter of Hamburg from 1929-1945.
Hubert Klausner was Gauleiter of Kärnten from 1938 until his death in 1939.
Picture source: Illustrierter Beobachter, #44/1938.
Erich Koch was Gauleiter of Ostpreußen from 1929-1945.
Wilhelm Kube was Gauleiter of Kurmark from 1933-1936.
Hartmann Lauterbacher was Gauleiter of Südhannover-Braunschweig from late 1940-1945.
Picture source: Illustrierter Beobachter, #52/1940.
Wilhelm Friedrich Loeper was Gauleiter of Magdeburg-Anhalt from 1929 to his death in 1935.
Second picture source: Hans Heinz Mantau-Sadlia, Deutsche Führer Deutsches Schicksal. Das Buch der Künder und Führer des dritten Reiches (Munich: Verlag Max Steinebach, 1934)
Hinrich Lohse was Gauleiter of Schleswig-Holstein from 1925-1945.
Alfred Meyer was Gauleiter of Westfalen-Nord from 1931-1945.
Wilhelm Murr was Gauleiter of Würrttemberg from 1928-1945.
Martin Mutschmann was Gauleiter of Sachsen from 1925-1945.
Second picture source: Der Gau Sachsen (Dresden: Kommunal-Verlag Sachsen, 1939).
Friedl Rainer was Gauleiter of Salzburg from 1940 to 1941, and of Gau Kärnten from 1941-1945.
Picture source: Illustrierter Beobachter, #45/1938.
Carl Röver was Gauleiter of Weser-Ems from 1928 to his death in 1942.
Bernard Rust was Gauleiter of Süd-Hannover-Braunschweig from 1928-1940.
Fritz Sauckel was Gauleiter of Thüringen from 1927-1945.
Hans Schemm was Gauleiter of Bayerische Ostmark until his death in 1935.
Column 3 source: Hans Schemm spricht (Bayreuth: Gauverlag Bayerische Ostmark, 1935).
Franz Schwede-Coburg was Gauleiter of Pommern from 1934-1945.
Gustav Simon was Gauleiter of Koblenz-Trier (later Moselland) from 1931-1945.
Jakob Sprenger was Gauleiter of Hessen-Nassau from 1933-1945.
Julius Streicher was Gauleiter of Franken from 1929-1940.
Otto Telschow was Gauleiter of East Hannover from 1928-1945.
Adolf Wagner was Gauleiter of Munich-Upper Bavaria (München-Oberbayern) from 1929 until his death in 1944.
Fritz Wächtler was Gauleiter of Bayerische Ostmark from 1935-1945.