Princess Marie Auguste of Anhalt (10 June 1898 – 22 May 1983) was the daughter of Eduard, Duke of Anhalt, and his wife, Princess Louise Charlotte of Saxe-Altenburg.

On 10 June 1898, Marie-Auguste was born in Ballenstedt, Anhalt, Germany, to the then Prince Eduard of Anhalt and his wife Princess Louise of Saxe-Altenburg. Her father would not succeed his brother Frederick II until 1918, the year he also died. Her paternal grandparents were Frederick I, Duke of Anhalt and Princess Antoinette of Saxe-Altenburg. Her maternal grandparents were Prince Moritz of Saxe-Altenburg and Princess Augusta of Saxe-Meiningen.

Marie-Auguste was raised in Dessau, the capital of the duchy of Anhalt. She had five siblings, but her elder sister Friederike and brother Leopold died while infants. Marie-Auguste was an elder sister of Joachim Ernst, Duke of Anhalt.

On 11 March 1916 in Berlin, Marie-Auguste married Prince Joachim of Prussia, the youngest son of German Emperor Wilhelm II. She and Joachim, who was Wilhelm's last unmarried child, had been officially engaged since 14 October of the previous year. The wedding was celebrated at Bellevue Palace, and was attended by Joachim's father and mother Empress Augusta Viktoria, the Duke and Duchess of Anhalt, as well as other relatives. They had a simple Lutheran ceremony.

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