Mariana is a feminine given name of Latin origin. The masculine equivalent is Marianus which is derived from Marius. Marianus became Mariano in Italian, Spanish and Portuguese.
Mariana of Austria (1634–1696), Queen consort of Spain
Mariana Koskull (1785–1841), Swedish noble
Mariana Victoria of Spain (1718–1781), Queen of Portugal
Infanta Mariana Francisca of Portugal (1736–1813), daughter of King Joseph I of Portugal
Infanta Mariana Vitória of Portugal (1768–1788), daughter of Queen Maria I of Portugal and King Peter III of Portugal
Mariana Frenk-Westheim (1898–2004), German-Mexican writer and translator
Mariana Griswold Van Rensselaer (1851–1931), American author
Mariana Starke (c. 1761–1831), English author
Juan de Mariana (1536–1624), Spanish Jesuit and historian
Mariana Efstratiou (born 1962), Greek singer
Mariana Levy (1966–2005), Mexican actress, singer, and television host
Mariana Nicolescu (born 1948), Romanian opera singer
Mariana Ochoa (born 1979), Mexican singer and actress
Mariana Popova (born 1978), Bulgarian singer
Mariana Renata (born 1983), Indonesian actress
Mariana Seoane (born 1976), Mexican actress, model, and singer
Mariana Ximenes (born 1981), Brazilian actress
Mariana Avitia (born 1993), Mexican archer
Mariana Díaz-Oliva (born 1976), Argentinian tennis player
Mariana Ohata (born 1978), Brazilian athlete
Mariana Pajón (born 1991), Colombian cyclist
Mariana Roriz (born 1980), Brazilian water polo player
Marijana Šurković (born 1984), Croatian freestyle swimmer
Mariana Bracetti (1825–1903), leader of the Puerto Rico independence movement
Mariana Loya (born 1979), American beauty queen
Mariana Molina (born 1990), Brazilian actress
Mariana Pfaelzer (born 1926), United States federal judge
Mariana de Pineda (1804–1831), martyr of Spanish liberalism
Marianna Pineda (1925–1996), American sculptor
Mariana,(1996), Mariana from Portugal, descendant of portuguese king afonso henriques
