Adeline can refer to:
Locations:
- Adeline, Illinois, village in Maryland Township, Ogle County, Illinois, USA
Female given name:
- Adeline Pond Adams (1859–1948), American writer and wife of Herbert Adams
- Adeline, Countess of Cardigan and Lancastre (1825–1915), wife of James Brudenell, 7th Earl of Cardigan
- Adeline André, French fashion designer and the head of one of the ten haute couture design houses in Paris
- Adeline Canac (born 1990), French pair skater, currently skating with Yannick Bonheur
- Adeline Genée DBE (1878–1970), Danish/British ballet dancer
- Adeline Geo-Karis (1918–2008), Republican politician and a member of the Illinois Senate for the 31st District
- Adeline Hazan (born 1956), French politician, MEP for the east of France, and mayor of Reims since March 2008
- Adeline Kerrar (1924–1995), infielder and catcher, played in the All-American Girls Professional Baseball League in 1944
- Adeline Knapp (1860–1909), American journalist, author, social activist, environmentalist and educator
- Adeline Lee Zhia Ern, Malaysian and was born in 1991
- Adeline Masquelier (born 1960), Associate Professor of Anthropology at Tulane University in New Orleans, Louisiana
- Adeline McKinlay, American tennis player of the end of the 19th century
- Adeline Miller, alias Adeline Furman, American madam and prostitute
- Frances Adeline "Fanny" Seward (1844–1866), daughter of United States Secretary of State, William H. Seward
- Frances Adeline Seward (1805–1865), born in 1805, the daughter of Judge Elijah Miller and Hannah Foote Miller
- Louise Adeline Weitzel (1862–1934), German-American writer
- Adeline Dutton Train Whitney (1824–1906), American poet and writer of books for girls
- Adeline Wuillème (born 1975), French foil fencer who competed in three Olympic games
- Adeline Yen Mah, Chinese American author and physician
Surname:
- Yves-Marie Adeline (born 1960), French Catholic writer
Other:
- Adeline Records, recording label in the United States
- Adelines, Adeleorina blood parasites of the families Adeleidae and Legerellidae
- Adeline Software International, discontinued video game developing company situated in France
- Ballade pour Adeline, 1976 instrumental
- Cyclone Adeline (disambiguation), two tropical cyclones near Australia: 1973 and 2005
- Pépinières Arboretum Adeline, commercial nursery with arboretum in France
- Portrait of Mary Adeline Williams, the title of two separate oil on canvas paintings by Thomas Eakins
- Sweet Adeline (musical), musical with music by Jerome Kern, book and lyrics by Oscar Hammerstein II
- Sweet Adeline (song)), ballad best known as a barbershop standard