| Chinese | IMO Past Papers | Problems in 30 IMOs (International Mathematical Olympiads) |
| English | IMO Problems | Solutions and problems in the past IMOs |
| English | Best Links of Math Olympiads | Problems in many mathematical olympiads in the world |
| English | APMO | Problems in Asian Pacific Mathematics Olympiads |
| English | IMO 2003 | The official site of IMO 2003. |