Dame Louise Margaret Leila Wemyss, Lady Paget, GBE (born 9 October 1881 – died 24 September 1958) was a British humanitarian, active in the cause of Serbian relief, beginning in World War I, leading the first Serbian Relief Fund unit to Skoplje in November 1914.

Ralph Spencer Paget was appointed Knight Commander of the Order of St Michael and St George (KCMG) in 1909 and Louise encouraged him to accept a transfer to the Balkan Kingdom of Serbia in July 1910.

[3] In 1915 she set up a hospital in Skopje to treat wounded Serbs, but also to help fight the epidemic spreading through Serbia.

[5] Dame Louise Paget was the first recipient of the Medal of Honor of the Federation of Women's Clubs of New York City in 1917; other recipients included humanitarian Evelyn Smalley (1919), activist Carrie Chapman Catt (1922, decoration without the eagle), physicist Marie Curie (1929), Madame Chiang Kai-shek, First Lady of the Republic of China (1939), and Austrian-born pioneer atomic scientist Lise Meitner (1949).

[6][7] Louise, Lady Paget was invested as a Dame Grand Cross, Order of the British Empire (GBE) in 1917.