| Asia-Pacific Informatics Olympiad (APIO) | | 19 | 57 |
| Balkan - Balkan OI (Balkan Olympiad in Informatics) | | 2 | 6 |
| Baltic - BOI (Baltic Olympiad in Informatics) | | 24 | 72 |
| Canada - CCO (Canadian Computing Olympiad) | | 22 | 66 |
| Central Europe - CEOI (Central European Olympiad in Informatics) | | 22 | 66 |
| China - China Team Homework (集训队作业 / 集训队互测) | | 85 | 401 |
| China - CSP-J/S | | 8 | 30 |
| China - CTS/CTSC (China Team Selection) (中国国家队选拔) | | 40 | 120 |
| China - CTT (China Team Training) (清华集训 / 北大集训) | | 47 | 141 |
| China - IOI China Team Training (中国国家队集训) | | 43 | 121 |
| China - Misc | | 40 | 130 |
| China - NOI (National Olympiad in Informatics) | | 46 | 138 |
| China - NOIP (National Olympiad in Informatics in Provinces) | | 7 | 26 |
| China - Provincial Team Selection (省队选拔) | | 395 | 416 |
| China - WC (Winter Camp) (冬令营 / 候选队选拔) | | 17 | 51 |
| Croatia - Croatian Olympiad In Informatics (HIO) | | 3 | 12 |
| Croatia - Croatian Open Competition In Informatics (COCI) | | 26 | 130 |
| Croatia - IOI/CEOI Team Selection (Izborne Pripreme) | | 12 | 36 |
| Europe - European Girls' Olympiad in Informatics (EGOI) | | 10 | 40 |
| Europe - European Junior Olympiad in Informatics (EJOI) | | 16 | 48 |
| International - IOI (International Olympiad in Informatics) | | 38 | 118 |
| Iran - آزمون انتخاب تیم (INOI Team Selection) | | 0 | 0 |
| Japan - JOI (Japanese Olympiad in Informatics) (日本情報オリンピック) | | 12 | 60 |
| Japan - JOI Open Contest (日本情報オリンピック 通信教育) | | 14 | 43 |
| 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) | | 56 | 171 |
| Kazakhstan - IZhO (International Zhautykov Olympiad) (Жаутыковская Олимпиада по Математике, Физике и Информатике) | | 18 | 54 |
| Korea - KOI TST (Korea IOI Team Selection Test) (국제정보올림피아드 대표학생 선발고사) | | 14 | 56 |
| Nordic - Nordic Olympiad in Informatics | | 7 | 21 |
| Poland - Olimpiada Informatyczna (Polish Olympiad in Informatics) | | 63 | 166 |
| Romania - RMI (Romanian Master of Informatics) | | 12 | 36 |
| Russia - Russian Olympiad in Informatics | | 6 | 24 |
| Singapore - National Olympiad in Informatics | | 7 | 35 |
| Sweden - PO (Programmeringsolympiaden) | | 1 | 6 |
| Taiwan - 國際資訊奧林匹亞研習營初選 (TOI Primary) | | 1 | 5 |
| Ukraine - Всеукраїнської олімпіади з інформатики | | 5 | 20 |
| United States - USACO (USA Computing Olympiad) | | 27 | 81 |