A necklace (locket also redirects here and is a container worn on a necklace) is a piece of jewellery worn around the neck. This may refer to:
- Gellert Grindelwald's Deathly Hallows necklace, a necklace Gellert Grindelwald made during his lifetime, which was passed down to Credence Barebone in 1926
- Talbott Winger's swan necklace, a necklace kept by Talbott Winger for sentimental reasons in the 1980s
- Butterbeer cork necklace, a unique accessory worn by Luna Lovegood
- Slytherin's Locket, a possession of Salazar Slytherin and heirloom of his descendants
- Regulus Black's Locket, a replica of the locket owned by Salazar Slytherin
- Xenophilius Lovegood's necklace, shaped like the symbol of the Deathly Hallows
- Opal Necklace, a Dark artefact that kills anyone who touches it
- Ronald Weasley's sweetheart necklace, a gift to Ron Weasley from Lavender Brown in 1997