Namesakes
Fictional Characters from Books:
1 character
Augusta Elton 1815 Emma 
Harry Potter Characters:
1 character
Augusta Longbottom
Notable Actors and Entertainers:
4 actors
Lila Lee (a.k.a. Augusta) 1905-1973
Patricia Morison (middle name Augusta) 1915-2018
Augusta Dabney 1918-2008
Peggy Cummins (a.k.a. Augusta) 1925-2017
Notable Musicians:
1 singer
Yma Sumac (middle name Augusta) 1922-2008
Olympic Medalists:
1 bronze
(bronze) Ruth Svedberg (middle name Augusta) 1928 discus throw
Other Royalty:
4 princesses, 1 empress consort/queen consort, 1 queen consort, 1 queen consort/empress consort
Auguste of Prussia (a.k.a. Augusta) 1780-1841 Prussia
Helena of the United Kingdom (middle name Augusta) 1846-1923 United Kingdom
Charlotte of Prussia (middle name Augusta) 1860-1919 Prussia
Augusta of Saxe-Weimar-Eisenach 1861-1888; 1871-1888 Prussia; German Empire
Alice, Countess of Athlone (middle name Augusta) 1883-1981 United Kingdom
Auguste Viktoria of Schleswig-Holstein (a.k.a. Augusta) 1888-1918 German Empire; Prussia
Mary of Teck (middle name Augusta) 1910-1936 United Kingdom
Saints:
1 saint
Saint Augusta of Treviso ?-100
Swedish Kings and Queens:
1 queen
Queen Kristina (middle name Augusta) 1632-1654