Ernestine is a feminine given name. Ernest is the male counterpart of this name. Notable people with the name include:
Ernestine Anderson (1928–2016), American jazz and blues singer Ernestine Bayer (1909–2006), American athlete Ernestine Bazemore (died 2025), American politician Ernestine Gilbreth Carey (1908–2006), American author Ernestine Cannon (1904–1969), American ceramicist Ernestine Carter (1906–1983), American journalist Ernestine Chassebœuf (1910–c.2005), French letter-writer Ernestine Cobern Beyer (1893–1972), American poet and author Ernestine Eckstein (1941–1992), American LGBT activist Ernestine Fuchs (1885–1962), German film actress, film producer, and screenwriter Ernestine Fu (born 1992), American venture capital investor and author Ernestine de Lambriquet (1778–1813), the adopted/foster daughter of King Louis XVI and Queen Marie Antoinette of France Ernestine Leibovici (1918–1988), more commonly known as Eren Eyüboğlu, Romanian-born Turkish painter and mosaic artist Ernestine Mbakou, Cameroonian novelist
Ernestine Rengiil, Palauan lawyer Ernestine Rose (1810–1892), Russian-American abolitionist and feminist Ernestine Rose (1880–1961), American librarian Ernestine Russell (1938–2026), Canadian gymnast and American college gymnastics coach Ernestine Jane Geraldine Russell (1921–2011), American actress, singer and model Ernestine Schumann-Heink (1861–1936), Austrian-German-American operatic contralto Ernestine H. Wieder Singer (1911–1938), American anthropologist and archaeologist
Fictional characters Ernestine Tomlin, a fictional telephone company operator portrayed by Lily Tomlin Ernestine, a character in Dorothy Cannell's book The Importance of Being Ernestine Ernestine, the title character in L'Histoire d'Ernestine, a short novel from the 18th century written by Marie-Jeanne Riccoboni Ernestine, a character on Sesame Street
See also Ernestine branch, a branch of the German House of Wettin Ernestine, a comic-opera by Choderlos de Laclos