Siegfried Fred Singer ( born September 27, 1924 ) is an Austrian-born American physicist and emeritus professor of environmental science at the University of Virginia.

* September 8 – Siegfried Sassoon, British poet ( d. 1967 )

* September 18 – Siegfried Marcus, German-born automobile pioneer ( d. 1898 )

At the same time, Raeder worked to promote National Socialist ideology as opposed to the NSDAP in the Navy, ordering in September 1936 that all officers read a tract by Kriegsmarine Commander Siegfried Sorge called Der Marineoffizier about what it took to be a good officer., Sorge had claimed that one could not be a good naval officer without believing in National Socialist values.

By 7 September the 176th Infantry Division ( a Kranken division composed of elderly men and men with various medical complaints ) had arrived from the Siegfried Line and elements of the First Parachute Army began to appear.

On 23 September the Germans began constructing the Siegfried Stellung, called the Hindenburg Line by the British.

Maximillian Adolph Otto Siegfried Schmeling ( September 28, 1905 – February 2, 2005 ) was a German boxer who was heavyweight champion of the world between 1930 and 1932.

* September 5 – The posthumous world première of Sergei Prokofiev's Piano Concerto No. 4 ( for the left hand ), composed in 1931, takes place in Berlin, performed by Siegfried Rapp and the West Berlin Radio Symphony Orchestra, conducted by Martin Rich.

The American forces reached the ' Siegfried Line ' or ' Westwall ' in late September.

* September 1 – Siegfried Sassoon, poet, author

In September 1944 the Western Allies launched Operation Market Garden, an attempt by the British 2nd Army to bypass the Siegfried Line and advance into the Ruhr, Germany ’ s industrial heartland.

By September 1944 the Western Allies had reached Germany's western border, which was protected by the extensive Siegfried Line.

On 17 September, British, American, and Polish forces launched Operation Market Garden, an ambitious attempt to bypass the Siegfried Line by crossing the Lower Rhine River in Holland.

In September, the Wehrmacht high command's reinforcement of the Siegfried Line brought total troop strength up to an estimated 230, 000 soldiers, including 100, 000 fresh personnel.

Siegfried Bing ( February 26, 1838 – September 6, 1905 ), often referenced erroneously as " Samuel Bing ", was a German art dealer who lived in Paris as an adult, and who helped introduce Japanese art and artworks to the West and was a factor in the development of the Art Nouveau style during the late nineteenth century.

Dr. Siegfried Günter ( 8 December 1899-20 June 1969 ) and Walter Günter ( 8 December 1899-21 September 1937 ) were German twin brothers and pioneering aircraft designers.

On 14 September, the 5th penetrated the Siegfried Line at Wallendorf, remaining until the 20th, to draw off enemy reserves from Aachen.

Bernhard Siegfried Albinus ( originally Weiss ) ( 24 February 1697 – 9 September 1770 ) was a German-born Dutch anatomist.

* Battle of the Drocourt-Quéant Switch-breaking a switch line of the Siegfried Stellung in front of the Wotan Line in September 1918

* Battle of St Quentin Canal-a 30-mile break ( by British, Australian and American troops ) in the Siegfried Stellung around the village of Bellicourt in late September 1918

New productions of Das Rheingold and Die Walküre were performed in early 2009, followed by Siegfried ( September – October 2009 ) and Götterdämmerung ( April 2010 ).

Siegfried Samuel Marcus ( 18 September 1831 – 1 July 1898 ) was a German-born Austrian inventor and automobile pioneer.

This situation changed, however, by the middle of September, as Allied forces came into contact with the German frontier and the Siegfried Line and encountered considerable German resistance, with German forces beginning to set up organized defensive positions and the Allied advance slowing.

By September 1944, it had become urgent for the Allies to clear both banks of the Scheldt estuary in order to open the port of Antwerp to Allied shipping, thus easing logistical burdens in their supply lines stretching hundreds of miles from Normandy eastward to the Siegfried Line.

Thomas Nast ( September 27, 1840 – December 7, 1902 ) was a German-born American caricaturist and editorial cartoonist who is considered to be the " Father of the American Cartoon ".

* September 25 – Jacob Schiff, German-born banker and philanthropist ( b. 1847 )

* September 6 – Hanns Eisler, German-born composer ( b. 1898 )

* September 6 – Henry Muhlenberg, German-born founder of the U. S. Lutheran Church ( d. 1787 )

Bruno Walter ( September 15, 1876February 17, 1962 ) was a German-born conductor.

Fred Fisher ( September 3, 1875 – January 14, 1942 ) was a German-born American songwriter and Tin Pan Alley music publisher.

John Werner Kluge ( September 21, 1914 – September 7, 2010 ) was a German-born American entrepreneur who was at one time the richest person in America.

Uziel " Uzi " Gal ( Hebrew: עוזיאל " עוזי " גל ), born Gotthard Glas ( December 15, 1923 – September 7, 2002 ), was a German-born Israeli gun designer, best remembered as the designer and namesake of the Uzi submachine gun.

Levi Strauss (, born Löb Strauß, ; February 26, 1829 – September 26, 1902 ) was a German-born American businessman who founded the first company to manufacture blue jeans.

Ernst Gräfenberg ( September 26, 1881 in Adelebsen near Göttingen, Germany – 28 October 1957 in New York City ) was a German-born physician ( medical doctor ) and scientist.

Jean Erdman, Baron Dieskau or Jean-Armand Dieskau, Baron de Dieskau or Ludwig August von Dieskau ( 1701 Saxony – 8 September 1767 Surenne ) was a German-born soldier remembered mostly as a French general and commander in America for a part of the French and Indian War.

* September 8-Peter Simon Pallas, German-born naturalist ( born 1741 )

George Lachmann Mosse ( September 20, 1918, Berlin, Germany – January 22, 1999, Madison, Wisconsin, United States ) was a German-born American cultural historian.

Susan Blakely ( born September 7, 1948 ) is a Golden Globe-winning German-born American film actress known for her leading role in Universal and ABC Television's ground-breaking mini-series, Rich Man, Poor Man, which aired in 1976.

John George Nicolay ( born February 26, 1832, as Johann Georg in Essingen, Rhenish Bavaria – September 26, 1901 ) was an American ( German-born ) biographer, secretary of US President Abraham Lincoln and member of the German branch of the Nicolay ( family ).

Carlos Hartling ( 2 September 1869 – 1920 ) was a German-born composer from Honduras, who composed the music for the National Anthem of Honduras, adopted as the country's national anthem in 1915.

Maria Elizabeth Zakrzewska ( 6 September 1829 – 12 May 1902 ) was a German-born physician of Polish descent who made her name as a pioneering female doctor in the United States.

Jean Berger (; September 27, 1909 – May 28, 2002 ) was a German-born pianist, composer, and music educator.

Erwin Hillier ( 2 September 1911 – 10 January 2005 ) was a German-born cinematographer known for his work in British cinema from the 1940s to 1960s.

* 10 September — Uri Avnery, German-born Israeli writer and founder of the Gush Shalom peace movement

Friedrich Daniel Rudolf Kuhlau ( 11 September 1786 – 12 March 1832 ) was a German-born Danish composer during the Classical and Romantic periods.