A necklace (locket also redirects here and is a container worn on a necklace) is a piece of jewelry worn around the neck. This may refer to:
- Butterbeer cork necklace, a unique accessory worn by Luna Lovegood
- 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 artifact that kills anyone who touches it
- Salazar Slytherin's Locket, a possession of Salazar Slytherin and heirloom of his descendants
- Sweetheart necklace, a gift to Ron Weasley from Lavender Brown