Alexandra may refer to:
- Grand Duchess Alexandra Georgievna of Russia (1870–1891), born Princess Alexandra of Greece and Denmark, firstborn daughter of George I of Greece.
- Alexandra the Maccabee (63 BC–28 BC) of the Hasmonean Kingdom.
- Princess Alexandra of Denmark (1844–1925), oldest daughter of King Christian IX of Denmark, Queen consort of Edward VII.
- Princess Alexandra of Saxe-Coburg and Gotha (1878–1942), granddaughter of Victoria of the United Kingdom.
- Princess Alexandra of Hanover and Cumberland (1882–1963), second eldest daughter of Ernest Augustus, Crown Prince of Hanover and Princess Thyra of Denmark.
- Princess Alexandra Victoria of Schleswig-Holstein-Sonderburg-Glücksburg (1887–1957), wife of Prince August Wilhelm of Prussia.
- Princess Alexandra, Duchess of Fife (1891–1959), granddaughter of Edward VII of the United Kingdom.
- Princess Alexandra of Yugoslavia (1921–1993), daughter of Alexander I of Greece, Queen consort of Peter II of Yugoslavia.
- Princess Alexandra, The Honourable Lady Ogilvy (born 1936), granddaughter of George V of the United Kingdom.
- Alexandra Prinzessin von Hannover (born 1937), wife of Prince Welf Henry of Hanover.
- Alexandra, Princess of Leiningen (born 1959), daughter of Ernst August IV, Prince of Hanover, sister of Ernst August V, Prince of Hanover.
- Princess Alexandra of Greece (born 1968), eldest daughter of Prince Michael of Greece and Denmark.
- Princess Alexandra of Sayn-Wittgenstein-Berleburg (born 1970), eldest daughter of HRH Princess Benedikte of Denmark.
- Alexandra von Fürstenberg (born 1972), sister of Marie-Chantal, Crown Princess of Greece, sometimes referred to as Princess Alexandra of Fürstenberg.
- Princess Alexandra of Luxembourg (born 1991), only daughter of Henri, Grand Duke of Luxembourg.
- Princess Alexandra of Hanover (born 1999) youngest daughter of Ernst August V, Prince of Hanover and Caroline, Princess of Hanover, Hereditary Princess of Monaco.
- Alexandra, Countess of Frederiksborg (born 1964), formerly Princess Alexandra of Denmark, the former wife of Prince Joachim of Denmark.