| Opeila Winters |
Witch, Adult I |
6 731 |
2 Jan 2020 |
| Oliver Brown |
Second year, Ravenclaw |
3 134 |
12 Oct 2022 |
| Olivia Williams |
Third year, Gryffindor |
1 464 |
14 Apr 2025 |
| Ophelia Vanderbilt |
Second year, Gryffindor |
1 446 |
18 Jan 2026 |
| Orion Lécuyer |
Professor of Defence Against the Dark Arts, IV |
1 149 |
2 Sep 2021 |
| Oliver Armani |
Third year, Slytherin |
752 |
22 Sep 2024 |
| Ophelia Northwell |
Fourth year, Quidditch player, Ravenclaw |
746 |
21 Jul 2023 |
| Oonagh Brown |
Third year, Quidditch player, Gryffindor |
400 |
14 Jun 2024 |
| Odette Haven |
Third year, Ravenclaw |
374 |
16 Apr 2018 |
| Olivia Cuthburt |
Second year, Quidditch player, Hufflepuff |
227 |
12 Jan 2026 |
| Oliver Hart |
Sixth year, Ravenclaw |
143 |
24 Jun 2018 |
| Oliver Thorn |
Second year, Hufflepuff |
116 |
30 Apr 2023 |
| Odilon Wilde |
Third year, Gryffindor |
115 |
28 Mar 2023 |
| Opal Valentine |
First year, Ravenclaw |
103 |
7 Apr 2024 |
| Orion Neptune |
Second year, Slytherin |
85 |
13 Jan 2021 |
| Olivia Choi |
First year, Hufflepuff |
85 |
8 Feb 2024 |
| Olivia Belle Sato |
Second year, Mahoutokoro |
85 |
21 May 2026 |
| Orianna Jayne Lightfoot |
First year, Hufflepuff |
74 |
13 Aug 2020 |
| Ogla Crocorith |
First year, Gryffindor |
69 |
19 Mar 2019 |
| Oswald Vanigton |
Third year, Hufflepuff |
68 |
15 May 2019 |
| Orion Ewel |
First year, Hufflepuff |
66 |
8 Mar 2018 |
| Ottilie Thompson |
First year, Quidditch Player, Gryffindor |
65 |
12 Jun 2025 |
| Olivia Ludwig |
First year, Hufflepuff |
63 |
14 Mar 2021 |
| Odette Leone |
Second year, Ravenclaw |
57 |
5 Mar 2025 |
| Olivia Blackburn |
Second year, Slytherin |
53 |
20 May 2018 |