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An Arithmancer is a wizard or witch who specialises in the field of Arithmancy, a branch of magic that involves using complicated number charts to make predictions.

Known Arithmancers

The well-known Arithmancer, Bridget Wenlock, was the first to discover the magical properties of the number seven. Septima Vector is known to have taught Arithmancy at Hogwarts from 1991 to 1996, quite possibly longer.


Arithmancer and Arithmancy come from the Greek αριθμός (arithmos), meaning "number", and μαντεία (manteia), meaning "divination".

Known Arithmancers


Professors: Septima Vector
Known Arithmancers: Bridget Wenlock
Textbooks: Numerology and Grammatica · New Theory of Numerology
Arithmancy at Hogwarts: Arithmancy (class) · Classroom 7A · Advanced Arithmancy Studies

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