Nicholas (also spelled Nicolas) is a given name that can refer to:
- Nicolas Flamel, creator of the Philosopher's stone
- Nicolas Grimmett, a student at Hogwarts in the 1980s and 1990s
- Nicholas de Mimsy-Porpington, the Gryffindor house ghost
Behind the scenes
Real-world individuals with the given name Nicholas include:
- Nicholas Blane, the actor who portrayed ministry employee Bob in the film adaptation of Harry Potter and the Order of the Phoenix
- Nicholas Dare, plays an Auror in Harry Potter and the Deathly Hallows: Part 1
- Nicholas Hooper, a composer for the Harry Potter films
- Nicholas Saunders, a graphic artist who worked on the last three Harry Potter films