Princess Charlotte, Duchess of Valentinois, styled Hereditary Princess of Monaco between 1922 and 1944, was the daughter of Louis II, Prince of Monaco, and mother of Prince Rainier III. From 1922 until 1944, she was the Hereditary Princess of Monaco, heiress presumptive to the throne.

Louis II was Prince of Monaco from 26 June 1922 to 9 May 1949.