| Opeila Winters |
Sixth year, Prefect of Slytherin |
6 624 |
2 Jan 2020 |
| Oliver Brown |
Second year, Ravenclaw |
3 133 |
12 Oct 2022 |
| Ophelia Northwell |
Second year, Quidditch player, Ravenclaw |
420 |
21 Jul 2023 |
| Odilon Wilde |
Third year, Gryffindor |
88 |
28 Mar 2023 |
| Olivia Choi |
First year, Hufflepuff |
85 |
8 Feb 2024 |
| Oonagh Brown |
First year, Quidditch Player, Writer, Prefect of Gryffindor |
79 |
14 Jun 2024 |
| Olive Campbell |
First year, Ravenclaw |
55 |
17 Jun 2023 |
| Olivia Blackburn |
Second year, Slytherin |
53 |
20 May 2018 |
| Oakleigh Bell |
First year, Ravenclaw |
31 |
29 Sep 2023 |
| Oliver Blackthorne |
Second year, Ravenclaw |
25 |
23 Nov 2020 |