The German Coast (French: Côte des Allemands, German: Deutsche Küste) was a region of early Louisiana settlement located above New Orleans on the east side of the Mississippi River – specifically, from east (or south) to west (or north), in St. Charles, St. John the Baptist, and St. James parishes of present-day Acadiana.  It was largely settled by German immigrants. The four slave-holding plantations that they developed along this "coast" were Karlstein, Hoffen, Mariental, and Augsburg. 
The Whitney Plantation opened for tours in 2014 in the German Coast and is a slavery museum that is open to the public.
The area's name was derived from the large population of German immigrants who were settled along the Mississippi River in 1721 by John Law and the Company of the Indies. When the company folded in 1731, the Germans became independent land owners. 
Despite periodic flooding, hurricanes, and the rigors of frontier life, the German pioneers made a success of their settlements. Their farming endeavors provided food not only for themselves but also for New Orleans' residents. Some historians credit these German farmers with the survival of early New Orleans. 
Most of the German Coast settlers came from the Rhineland region of Germany, the German-speaking cantons of Switzerland, and other areas. Many came from the German-speaking region of Alsace-Lorraine in France, and some from Belgium. 
From the time of their arrival, the German immigrants began speaking French and intermarried with the early French settlers. Over the subsequent decades they intermarried with the descendants of the latter as well as the Acadians. Together with other settlers, they helped create Cajun culture.
The German Coast was the site of the largest slave revolt in US history, the 1811 German Coast Uprising. This was after the US had acquired the Louisiana Territory. It was more than a year before the Territory of Orleans was admitted as the state of Louisiana.
The rebellion's leaders were slaves Quamana and Harry, and Charles Deslondes, a free man of color. They gathered an estimated 500 slaves from plantations along the River Road and marched toward New Orleans. The insurgents killed two white men without meeting much resistance, but they were not well armed.
The local militia was called out and killed nearly half of the total ninety-five slaves who died as a result of the rebellion. The remainder were executed after tribunals were held in the parishes, including Orleans Parish.  
During World War I, in a reaction against Germany as the enemy, the Louisiana state legislature passed Act 114: it prohibited all expressions of German culture and heritage in the state, especially the printed or spoken use of the German language.    The use of the German language had declined among descendants of settlers of the German coast, but descendants of more recent German immigrants who arrived after the Revolutions of 1848 and later were affected.
- "Course Of The River Mississippi, from the Balise to Fort Chartres. Ross, Lieut. 1775" rumsey.geogarage.com
- Wall et al., Louisiana: A History (Fourth Edition)
- Merrill, Ellen C. Germans of Louisiana
- Acadian-Cajun Genealogy and history
- "German Americans", University of Louisiana – Lafayette Center for Cultural and Eco-Tourism, accessed 8 Dec 2008
- The German-Acadian Coast Historical and Genealogical Society Archived 15 June 2006 at the Wayback Machine.
- CajunCulture.com, original source: Brasseaux, Founding of New Acadia; Taylor, Louisiana; Wall et al., Louisiana Archived 15 June 2006 at the Wayback Machine.
- Eaton, Fernin (7 November 2011).
"1811 Slave Uprising; Governor on Trial: Claiborne in His Own Words". Salon publique, Pitot House, New Orleans. Academia.edu. Retrieved 09/07/2012. Check date values in:
-  Archived 26 March 2016 at the Wayback Machine., African American Registry, 2005, accessed 18 Jan 2011
- www.louisianafolklife.org "Getting to Gemütlichkeit: German History and Culture in Southeast Louisiana"
- Louisiana (1918). Acts Passed at the ... Session of the ... General Assembly of the State of Louisiana. James M. Bradford, Printer to the Territory. pp. 188–. Retrieved 2 September 2013.
- "Acts Passed By The General Assembly of the State Of Louisiana At The Regular Session Begun And Held In The City Of Baton Rouge On The Thirteenth Day Of May 1918", Baton Rouge, Ramires-Jones Printing Co., 1918, p188
- The German-Acadian Coast Historical and Genealogical Society
- History of the Cajuns – The German Coast of Louisiana