is a common first name in English. It is an elaboration of the word 'cor', which means heart in Latin. In Celtic usages, the name is generally understood to mean 'daughter of the sea' or 'jewel of the sea'. (Rare) variations include (but are not limited to) Cordollya, Cordula, Cordiella, Cordeilia, and Cordell. It may also refer to:
- 'Cordelia', the title of a novel by Winston Graham, published in 1949. The titular character is known by the full name of Cordelia Blake.
- A character in the play King Lear by William Shakespeare, possibly based on the story of Queen Cordelia of the Britons and her father Leir.
- Cordelia Chase is a fictional character in the cult television series Buffy the Vampire Slayer and Angel.
- Cordelia Naismith is a fictional character in the Vorkosigan Saga novels by Lois McMaster Bujold.
- The main character of the short story "Cordelia the Crude" by Wallace Thurman
- Cordelia Gray is a fictional character in two books by P.D. James.
- Lady Cordelia Flyte is a fictional character in Brideshead Revisited by Evelyn Waugh.
- Cordelia Flakk is a character from Jasper Fforde's Lost in a Good Book.
- Cordelia, California (sometimes referred to as Cordelia Junction), an area of Fairfield, California
- Cordelia Lutheran Church is a building on the National Register of Historic Places in Latah County, Idaho
- Cordelia (moon), a moon of Uranus, named after the Shakespearean character.
- 2758 Cordelia, an asteroid, named after the Shakespearean character.
- Cordelia (butterfly), a genus of butterflies.
- Cordelia Gitter (AKA Nikki Carlisle), a former stripper and pornographic actress, part of the original season 2 cast of Oxygen's reality show "The Bad Girls Club"
- Cordelia's Dad, a band from Northampton, Massachusetts, USA.
- Cordelia, a Danish musical group
- Cordelia Malone, a song recorded in 1904 by Irish American singer Billy Murray.
- "Cordelia", a song by Canadian rock band The Tragically Hip, from their 1991 album Road Apples.