Each House area is protected by a painting that holds a password. Passwords can be found in other areas, such as Dumbedore's office and the Prefect's bathroom.
| Pass | Location | Reference |
| A circle that has no beginning | Deathly Hallows | |
| abstinence | Gryffindor common room | Half Blood Prince |
| Acid Pops | Dumbledore's office | Half Blood Prince |
| Albus | Deathly Hallows | |
| balderdash | Gryffindor common room | Goblet of Fire |
| banana fritters | Gryffindor common room | Goblet of Fire |
| baubles | Gryffindor common room | Half Blood Prince |
| caput draconis | Gryffindor common room | Sorcerer's Stone |
| cockroach cluster | Dumbledore's office | Goblet of Fire |
| dilligrout | Gryffindor common room | Half Blood Prince |
| dissendium | One-eyed witch statue | Prisoner of Azkaban |
| Dumbledore | Deathly Hallows | |
| Dumbledore's office | Deathly Hallows | |
| fairy lights | Gryffindor common room | Goblet of Fire |
| Fizzing Whizbee | Dumbledore's office | Order of the Phoenix |
| Flibbertigibbet | Gryffindor common room | Prisoner of Azkaban |
| fortuna major | Gryffindor common room | Prisoner of Azkaban |
| lemon drop/sherbert lemon | Dumbledore's office | Chamber of Secrets |
| Mad-Eye | Deathly Hallows | |
| mimbulus mimbletonia | Gryffindor common room | Order of the Phoenix |
| oddsbodikins | Gryffindor common room | Prisoner of Azkaban |
| open up (in Parseltongue) | Chamber of Secrets | Chamber of Secrets |
| pig snout | Gryffindor common room | Sorcerer's Stone |
| pine-fresh | prefect bathroom | Goblet of Fire |
| pure blood | Slytherin common room | Chamber of Secrets |
| quid agis? | Gryffindor common room | Half Blood Prince |
| scurvy cur | Gryffindor common room | Prisoner of Azkaban |
| toffee eclairs | Dumbledore's office | Half Blood Prince |
| wattlebird | Gryffindor common room | Chamber of Secrets |
