Alexander is a given name that can refer to:
- Alexander Pope, a Muggle poet
- Alexander William, a Gryffindor student
Alexander is a surname that can refer to:
- Christian Alexander, a Gryffindor student
Behind the scenes[]
Real-world individuals with the given name Alexander include:
- Alexander Bonner, an actor who appeared as an extra in the film adaptation of Harry Potter and the Order of the Phoenix.
- Alexander Cook, an actor who appeared as an extra in the film adaptation of Harry Potter and the Half-Blood Prince and Harry Potter and the Deathly Hallows: Part 2.
- Alexander Watson, Emma Watson's brother who plays an extra in the first two Harry Potter films
- Eva Alexander, portrayed a waitress in Harry Potter and the Deathly Hallows: Part 1
- Aleksandr Kuznetsov - portrayed Helmut in Fantastic Beasts: The Secrets of Dumbledore