| Asia-Pacific Informatics Olympiad (APIO) | 15 | 45 |
| Baltic - BOI (Baltic Olympiad in Informatics) | 16 | 48 |
| Canada - CCO (Canadian Computing Olympiad) | 20 | 60 |
| Central Europe - CEOI (Central European Olympiad in Informatics) | 18 | 54 |
| China - China Team Homework (集训队作业 / 集训队互测) | 52 | 156 |
| China - CSP-J/S | 7 | 26 |
| China - CTS/CTSC (China Team Selection) (中国国家队选拔) | 18 | 54 |
| China - CTT (China Team Training) (清华集训 / 北大集训) | 40 | 120 |
| China - IOI China Team Training (中国国家队集训) | 43 | 123 |
| China - Misc | 22 | 76 |
| China - NOI (National Olympiad in Informatics) | 26 | 78 |
| China - NOIP (National Olympiad in Informatics in Provinces) | 3 | 12 |
| China - Provincial Team Selection (省队选拔) | 372 | 1118 |
| China - WC (Winter Camp) (冬令营 / 候选队选拔) | 9 | 27 |
| Croatia - Croatian Open Competition In Informatics (COCI) | 5 | 25 |
| Croatia - IOI/CEOI Team Selection (Izborne Pripreme) | 6 | 18 |
| Europe - European Girls' Olympiad in Informatics (EGOI) | 4 | 16 |
| Europe - European Junior Olympiad in Informatics (EJOI) | 10 | 30 |
| International - IOI (International Olympiad in Informatics) | 27 | 81 |
| Japan - JOI (Japanese Olympiad in Informatics) (日本情報オリンピック) | 11 | 55 |
| Japan - JOI Open Contest (日本情報オリンピック 通信教育) | 10 | 31 |
| Japan - JOISC (Japanese Olympiad in Informatics Spring Camp) (日本情報オリンピック 春季トレーニング合宿) | 48 | 147 |
| Kazakhstan - IZhO (International Zhautykov Olympiad) (Жаутыковская Олимпиада по Математике, Физике и Информатике) | 4 | 12 |
| Korea - KOI TST (Korea IOI Team Selection Test) (국제정보올림피아드 대표학생 선발고사) | 10 | 40 |
| Nordic - Nordic Olympiad in Informatics | 3 | 9 |
| Poland - Olimpiada Informatyczna (Polish Olympiad in Informatics) | 10 | 32 |
| Poland - Potyczki Algorytmiczne | 31 | 87 |
| Romania - RMI (Romanian Master of Informatics) | 6 | 18 |
| Russia - Russian Olympiad in Informatics | 4 | 16 |
| Singapore - National Olympiad in Informatics | 5 | 25 |
| Ukraine - Всеукраїнської олімпіади з інформатики | 3 | 12 |
| United States - USACO (USA Computing Olympiad) | 2 | 6 |