Augustus Friedrich Finkelnburg (May 6, 1830 – January 1, 1889) was a German American immigrant, lawyer, Republican politician, and pioneer of Buffalo County, Wisconsin.
He served two years in the Wisconsin State Senate and one year in the State Assembly, representing Buffalo County, and served as county judge and district attorney.
Born in Rhenish Prussia, Finkelnburg emigrated to the United States and settled in Missouri.
In 1855, Finkelnburg settled in Fountain City, Buffalo County, Wisconsin and practiced law.
He died in San Antonio, Texas, where he had gone to recover from ill health.