| Infographics | Infographics | 463,415 |
| askphilosophy | AskPhilosophy: Philosophical questions and answers | 455,712 |
| duolingo | Duolingo | 448,280 |
| answers | reddit answers: a knowledgebase built on reddit | 407,113 |
| German | A community for students of German and discussions pertaining to the German language. | 394,202 |
| EnglishLearning | English As a Second Language | 391,691 |
| learnmath | Learn Math | 374,107 |
| csMajors | Students of Computer Science! | 351,720 |
| APStudents | AP Students Subreddit | 331,005 |
| SnapshotHistory | SnapshotHistory | 308,540 |
| UPSC | r/UPSC - Connect, Learn, Succeed | 301,474 |
| CBSE | CBSE | 296,836 |
| skeptic | skeptic | 296,670 |
| gradadmissions | Advice for getting into graduate school | 294,803 |
| etymology | Etymology: appreciating word origins | 287,576 |
