Princess Louise may refer to:
- People
- 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
- Lady Louise Windsor, born 2003, the elder child and only daughter of Prince Edward, Earl of Wessex and Sophie, Countess of Wessex, is sometimes thought to be "legally" a princess
- Princess Louise of Denmark (1726–1756), daughter of Christian VI of Denmark and wife of Ernest Frederick III, Duke of Saxe-Hildburghausen
- Princess Louise of Denmark (1750–1831), daughter of Frederick V of Denmark and wife of Landgrave Charles of Hesse-Kassel
- Princess Louise Charlotte of Denmark (1750–1831), daughter of Frederick, Hereditary Prince of Denmark, and wife of Landgrave William of Hesse-Kassel
- Princess Louise Auguste of Denmark (1771-1843), daughter of Christian VII of Denmark and wife of Frederick Christian II, Duke of Schleswig-Holstein-Sonderburg-Augustenburg
- Princess Louise of Denmark (1875–1906), daughter of Frederick VIII of Denmark and wife of Prince Friedrich Georg of Schaumburg-Lippe
- Louisa Maria Teresa Stuart (1682-1712), known in French as Louise-Marie
- Princess Louise-Marie of Belgium, born 1858
- Princess Louise of Belgium (b. 2004)
- Louise Mountbatten, 1889–1965, born Princess Louise of Battenberg, second wife of King Gustav VI Adolf of Sweden and Princess of Sweden
- See Louise of Prussia (disambiguation) for several Princess Louise in the Prussian Royal Family
- Other uses
- Princess Louise was one of the GWR 3031 Class locomotives that were built for and run on the Great Western Railway between 1891 and 1915
- Princess Louise (pub), historic public house, London
Famous quotes containing the words princess and/or louise:
“We are eager to tunnel under the Atlantic and bring the Old World some weeks nearer to the New; but perchance the first news that will leak through into the broad, flapping American ear will be that the Princess Adelaide has the whooping cough.”
—Henry David Thoreau (1817–1862)
“The world is a puzzling place today. All these banks sending us credit cards, with our names on them. Well, we didn’t order any credit cards! We don’t spend what we don’t have. So we just cut them in half and throw them out, just as soon as we open them in the mail. Imagine a bank sending credit cards to two ladies over a hundred years old! What are those folks thinking?”
—Sarah Louise Delany (b. 1889)