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Gemma is a given name that can refer to:
Behind the scenes
Real-world individuals with the given name Gemma include:
- Gemma Boyle, the actress who portrayed Unidentified Slytherin Girl in the film adaptations
- Gemma Jones, the actress who portrays Madame Pomfrey in the Harry Potter films
- Gemma Kayla, the actress who portrays a Ravenclaw Senior in the film adaptation of Harry Potter and the Deathly Hallows
- Gemma Padley, the actress who portrayed Penelope Clearwater in the film adaptation of Harry Potter and the Chamber of Secrets