Adolph Ernst Kroeger (28 December 1837 in Schwabstedt, Duchy of Schleswig – 8 March 1882 in St. Louis, Missouri) was a translator and author who contributed significantly to the understanding of German literature in the United States.
He was a Latin farmer, and instructed his son in foreign languages and instilled in him a love for music, poetry and philosophy.
Both by translations of the works of Fichte, Kant, and Leibniz, and by numerous essays in different periodicals, he largely contributed to a better understanding of German literature in the United States, and increased the number of those that are interested in it.
He also issued The Minnesingers of Germany, containing translations of Walter von der Vogelweide and others (New York, 1873), and Our Forms of Government and the Problems of the Future (1862).
An 1870 incident involving St. Louis finances and the city treasurer resulted in him being convicted for forgery and sentenced to a term in prison.