Princess Amélie Louise d'Arenberg, full German name: Amalie Luise, Prinzessin und Herzogin von Arenberg and full French name: Amélie Louise, princesse et duchesse d'Arenberg, (born 10 April 1789 in Brussels, Austrian Netherlands; died 4 April 1823 in Bamberg, Kingdom of Bavaria) was a member of the House of Arenberg by birth and, through her marriage to Duke Pius August in Bavaria, a member of the Palatinate-Birkenfeld-Gelnhausen line of the House of Wittelsbach. Amélie Louise was a grandmother of Empress Elisabeth of Austria through her son Duke Maximilian Joseph in Bavaria.

Born in Brussels, Austrian Netherlands, Amélie Louise was the daughter of Prince Louis Marie d'Arenberg and his first wife, Marie Adélaïde Julie de Mailly, dame d'Ivry-sur-Seine.

Amélie Louise married Duke Pius August in Bavaria, son of Duke Wilhelm in Bavaria and his wife Countess Palatine Maria Anna of Zweibrücken-Birkenfeld, on 26 May 1807 in Brussels. Pius August and Amélie Louise had one son:

After their marriage, the couple moved to Bamberg and their son Maximilian Joseph was born the following year. In 1817, Amélie Louise sent her only son to reside with his great uncle Maximilian I Joseph of Bavaria, where he studied at the Royal Institute of Education. Amélie Louise did not see him until 1820. Shortly after returning from her second visit to Munich, Amélie Louise died in 1823 in Bamberg. She was interred in the burial crypt of Tegernsee Abbey.

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