Princess Louise, Duchess of Argyll, 1848–1939, the sixth child and fourth daughter of Queen Victoria of the United Kingdom

Princess Louise, Princess Royal and Duchess of Fife, 1867–1931, the third child and the eldest daughter of King Edward VII of the United Kingdom and Queen Alexandra.

Louise Mountbatten, 1889–1965, born Princess Louise of Battenberg, second wife of King Gustav VI Adolf of Sweden and Princess of Sweden.

Lady Louise Windsor, born 2003, the eldest daughter of Prince Edward, Earl of Wessex and Sophie, Countess of Wessex (also titled Princess Louise of Wessex)

Princess Louise-Marie of Belgium, born 1858

Princess Louise of Belgium, born 2004

See Louise of Prussia (disambiguation) for several Princess Louise in the Prussian Royal Family.

Princess Louise of Denmark and Norway 1750, daughter of Frederik V of Denmark, married to Landgrave Charles of Hesse-Kassel.

Princess Louise, public house, Holborn, London, One of the great historic pubs of London, famous for its remarkable interior.