Louis Wagner may refer to:
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Louis C. Wagner Jr. (born 1932), United States Army four-star general
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Louis Wagner (racing driver) (1882–1960), French racing driver
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Louis Wagner (American general)
Louis Wagner (August 4, 1838 – January 15, 1914) was a German-born American military infantry officer who served in the Union Army and as the 9th Commander-in-Chief of the Grand Army of the Republic, 1880-1881.
Early life and military care ...
(1838–1914), German-born American military infantry
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Louis Wagner (murderer) (died 1875), German fisherman murderer
{{hndis, Wagner, Louis