| 100% | GRYFFINDOR | 10 | Hogwarts house whose alumni include Harry Potter |
| 68% | SLYTHERIN | 9 | Hogwarts house whose alumni include Severus Snape |
| 68% | HUFFLEPUFF | 10 | Hogwarts house whose alumni include Newt Scamander |
| 68% | RAVENCLAW | 9 | Hogwarts house whose alumni include Gilderoy Lockhart |
| 46% | GRYFFINDOR | 10 | Harry Potter's Hogwarts house in the "Harry Potter" series |
| 46% | SLYTHERIN | 9 | Draco Malfoy's Hogwarts house in Harry Potter |
| 41% | SLYTHERIN | 9 | Hogwarts house for Draco Malfoy in the "Harry Potter" series |
| 39% | RAVENCLAW | 9 | Luna Lovegood's Hogwarts house in the "Harry Potter" series |
| 39% | HUFFLEPUFF | 10 | Cedric Diggory's Hogwarts house in the "Harry Potter" series |
| 39% | SLYTHERIN | 9 | Draco Malfoy's Hogwarts house in the "Harry Potter" series |
| 39% | RAVENCLAW | 9 | Hogwarts house whose emblem is, surprisingly, an eagle |
| 37% | CIA | 3 | Sch. whose alumni include Anthony Bourdain and Roy Choi |
| 37% | SNAPE | 5 | Harry Potter professor who headed Slytherin house |
| 36% | RON | 3 | Harry Potter character whose middle name is Bilius |
| 35% | QUIDDITCH | 9 | Sport played by Harry Potter at Hogwarts |
| 35% | RAVENCLAW | 9 | Harry Potter's friend Luna is sorted in this house |
| 35% | DOBBY | 5 | House elf freed by Harry Potter |
| 34% | ISAACS | 6 | Jason —, actor whose roles include Lucius Malfoy in the Harry Potter film series |
| 34% | NYFA | 4 | Sch. in Battery Pl., Manhattan whose alumni include Damon Wayans and Bill Hader |
| 34% | DIAGONALLEY | 11 | Harry Potter thoroughfare whose name is a play on an adverb |
| 34% | DRACO | 5 | Harry Potter nemesis Malfoy whose first name is also a 49-Across |
| 33% | SLYTHERIN | 9 | House of Harry Potter's nemesis Draco |
| 33% | KREACHER | 8 | House elf Harry Potter inherited from Sirius |
| 32% | KATIE | 5 | ___ Bell, witch who was a fellow student of Harry Potter at Hogwarts |
| 31% | DOBBY | 5 | House-elf freed by Harry Potter |
| 30% | DOBBY | 5 | House-elf in the Harry Potter books |
| 30% | SNAPE | 5 | Hogwarts professor who disliked Harry Potter |
| 29% | DOBBY | 5 | House elf that Harry Potter tricks Lucius Malfoy into freeing |
| 28% | RON | 3 | Harry Potter pal |
| 28% | WAND | 4 | Harry Potter prop |