A necklace is an article of jewelry worn around the neck.

Necklace may also refer to:

• Necklace (combinatorics) or fixed necklace, a concept in combinatorial mathematics
• "The Necklace", a short story by Guy de Maupassant
• "The Necklace" (Dynasty), a 1981 episode of the TV series Dynasty
• Necklace (horse), foaled 2001
• The Necklace (album), a 2024 album by Allday

• Necklace of Harmonia, a fabled object in Greek mythology
• Necklace splitting problem, another application in combinatorics
• The Affair of the Necklace (disambiguation)
• Antoine's necklace, in topology
• Necklacing, a form of execution
• Necklace Nebula, nebula located in the constellation Sagitta