- Animatronic creatures – The film featured several animatronic creatures, including the three-headed dog Fluffy and the giant mountain troll.
- CGI and Motion capture – Used to create creatures like Norbert the dragon and the unicorn, and for scenes like the Quidditch match and the Battle of Hogwarts.
- Stunt work and Special Effects Rigging – The film’s stunts were elaborate and included stunts like Hagrid’s flying motorcycle, the flying Ford Anglia, and Quidditch matches. They used a custom-built rig for the Quidditch scene which allowed the actors to fly.
- Bluescreen and Greenscreen - Used extensively for magical effects, such as the Disappearing Cabinet, the Invisibility Cloak, and the Mirror of Erised.
- Prosthetics and Make up – Used to transform the actors into their characters, including the scars on Harry's forehead and the transformations of Quirrell and Voldemort.
- Puppeteering - Used for creatures such as the Cornish pixies and the Blast-Ended Skrewts.