Jacob is a given name that can refer to:
- Jacob, a student at Hogwarts School of Witchcraft and Wizardry in the 1970s or 1980s
- Jacob Erland, a wizard reported missing in 1997
- Jacob Grimm, a German folklorist known for collecting fairy tales
- Jacob Kowalski, an American No-Maj and friend of Newt Scamander
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