Marie Louise or Marie-Louise is a French feminine compound given name. In other languages, it may take one of several alternate forms:
Maria Luiza (Bulgarian, Portuguese)
Maria Luisa (Italian, Spanish)

Maria Luise, Marie Luise (German)
Maria Louisa, Mary Louise or Mary Lou (English).
Notable people with the name include:

Literature
Marie Louise Andrews (1849–1891), American short story writer, journalist and editor
Marie-Louise Belarbi (1928–2020), French-Moroccan bookseller, publisher and writer
Marie-Louise Boudât (1916–1968), French letterist and author

Marie-Louise Bousquet (1885–1975), French fashion journalist and Harper's Bazaar editor
Marie Louise Burgess-Ware (1870–?), African-American writer
Marie-Louise Colomb (1892–1965), Swiss writer

Marie-Louise Dreier (born 1936), Belgian poet
Marie-Louise Fitzpatrick (born 1962), Irish children's author and illustrator
Marie-Louise af Forsell (1823–1852), Swedish diarist
Marie Louise von François (1817–1893), German writer
Marie-Louise Gagneur (1832–1902), French feminist writer
Marie-Louise Gay (born 1952), Canadian children's writer and illustrator
Marie-Louise Haumont (1919–2012), Belgian writer
Marie-Louise Jensen (born 1964), English children's author
Marie Louise Lévêque de Vilmorin (1902–1969), French novelist and poet
Marie Louise Hamilton Mack (1870–1935), Australian poet
Marie-Louise Marmette (1870–1928), French-Canadian journalist, writer and speaker
Marie Louise Mignot (1712–1790), niece, housekeeper, hostess and love interest of Voltaire
Marie-Louise Mumbu (born 1975), Congolese journalist
Marie Louise de la Ramee (1839–1908), pseudonym Ouida, English novelist
Marie Louise Shedlock (1854–1935), French storyteller
Marie Louise Victoire, La Rochejacquelein (1772–1857), French memoirist
Music
Marie-Louise-Taos Amrouche (1913–1976), Algerian singer and writer
Marie-Louise Cantotti (1910–1999), American opera singer
Marie-Louise Cébron-Norbens (1888–1958), French opera singer
Marie-Louise Dähler, Swiss harpsichordist
Marie-Louise Damien (1889–1978), French singer and actress
Marie-Louise Desmatins (died 1708), French opera singer
Marie-Louise Gilles (born 1937), French opera singer
Marie-Louise Girod (1915–2014), French organist and composer
Marie-Louise Emma Cécile Lajeunesse (1847–1930), Canadian-British opera singer
Marie Louise Marcadet (1758–1804), Swedish opera singer and stage actress
Nobility
Sorted chronologically
Marie Louise Gonzaga (1611–1667), Queen of Poland and Grand Duchess of Lithuania
Marie Louise d'Aspremont (1651/1652–1692), daughter of Charles II, Count d’Aspremont; wife of Charles IV, Duke of Lorraine
Marie Louise d'Orléans (1662–1689), eldest daughter of Philippe de France and Princess Henrietta Anne of England; later Queen of Spain as wife of Charles II
Marie Louise of Hesse-Kassel (1688–1765), daughter of Charles I, Landgrave of Hesse-Kassel; wife of John William Friso, Prince of Orange
Marie Louise Élisabeth d'Orléans (1695–1719), daughter of Philippe II, Duke of Orléans, wife of Charles, Duke of Berry
Marie Louise Adélaïde d'Orléans (1698–1743), daughter of Philippe II, Duke of Orléans
Marie Louise de Rohan (1720–1803), daughter of Jules de Rohan, Prince of Soubise; wife of Gaston, Count of Marsan
Marie Louise de La Tour d'Auvergne (1725–1793), daughter of Charles Godefroy de La Tour d'Auvergne; wife of Jules, Prince of Guéméné
Marie Louise Élisabeth of France (1727–1759), daughter of King Louis XV of France; wife of Philip, Duke of Parma
Marie Louise of France (1728–1733), daughter of Louis XV of France
Countess Maria Louise Albertine of Leiningen-Dagsburg-Falkenburg (1729–1818), daughter of Count Christian Karl Reinhard of Leiningen-Dagsburg-Falkenburg; wife of Prince George William of Hesse-Darmstadt
Marie Thérèse Louise of Savoy, Princesse de Lamballe (1749–1792), daughter of Louis Victor, Prince of Carignano; wife of Louis Alexandre, Prince de Lamballe
Marie-Louise Coidavid (1778–1851), Queen of Haiti
Marie Louise, Duchess of Parma (1791–1847), second wife of Napoléon Bonaparte and Empress of the French
Duchess Marie Louise of Mecklenburg-Schwerin (1803–1862), daughter of Frederick Louis of Mecklenburg-Schwerin; wife of Georg, Duke of Saxe-Altenburg
Princess Marie Luise Charlotte of Hesse-Kassel (1814–1895), daughter of Prince William of Hesse-Kassel; wife of Prince Frederick Augustus of Anhalt-Dessau
Countess Marie Louise Larisch von Moennich (1858–1940), illegitimate daughter of Ludwig Wilhelm, Duke in Bavaria
Princess Marie Louise of Bourbon-Parma (1870–1899), daughter of Robert I, Duke of Parma; Princess Consort of Ferdinand I of Bulgaria