Princess Louise Marie Amélie of Belgium (18 February 1858 – 1 March 1924) was the eldest child and daughter of King Leopold II and Queen Marie Henriette of Belgium. She was a member of the House of Saxe-Coburg and Gotha, a branch of the House of Wettin which ruled in the Kingdom of Saxony. By her marriage to her first cousin once removed Prince Philipp of Saxe-Coburg and Gotha, she retained her birth titles of Princess of Saxe-Coburg and Gotha and Duchess in Saxony.
Louise was born during the reign of her paternal grandfather, Leopold I of Belgium, and was named after her paternal grandmother Queen Louise. She married in Brussels on 4 February 1875 her first cousin once removed Prince Philipp. Louise and Philipp settled in Vienna, where they had two children: Leopold Clement, born in 1878, and Dorothea, born in 1881.