Participants
| Ting-Fu Hong | Taipei (Chinese) |
| Márk Honti | Hungary |
| Ferenc Hörcher | Hungary |
| Stéphane Horel | France |
| Réka Hornyák | Hungary |
| Anna Horváth | |
| Viola Horváth | |
| Kata Horváti | Hungary |
| Edna Hounsa | Benin |
| Kristijan Hristovski | North Macedonia, Republic of |
| Tomas Hromadka | Slovakia |
| Imre Hronszky | |
| Jan Hrušák | Czech Republic |
| Ferenc Hudecz | Hungary |
| László Hunyadi | Hungary |
| László Hunyady | Hungary |
| Vasili Hurski | Belarus |
| Anne Husebekk | Norway |
| Dávid Huszár | Hungary |
| Sherzot Ibragimov | Uzbekistan |
| Sonia Ibrahim | Syrian Arab Republic (Syria) |
| Toshiyasu Ichioka | Japan |
| Emese Ignácz | Hungary |
| Tiberius Ignat | Germany |
| GABRIEL MARCEL IKOPI MOLEKO | Congo, Democratic Republic of the |
| Mr. Azizbek Ilkhamov | Uzbekistan |
| Judit Illés | Hungary |