◄ 22nd IPhO 1991 ►
Country results • Individual results
| Contestant | Country | Rank | Award |
|---|---|---|---|
| Timur Choutenko | Union of Soviet Socialist Republics | 1 |  Gold Medal |
| Michael James Montour | Canada | 2 | Gold Medal |
| Sergei Bachinski | Union of Soviet Socialist Republics | 3 | Gold Medal |
| Tairan Wang | People's Republic of China | 4 | Gold Medal |
| Yu Xiang Ren | People's Republic of China | 5 | Gold Medal |
| András Czirók | Hungary | 6 | Gold Medal |
| Szabolcs Káli | Hungary | 7 | Gold Medal |
| Alexandr Liapin | Union of Soviet Socialist Republics | 8 | Gold Medal |
| Pei Qi Xuan | People's Republic of China | 9 | Gold Medal |
| Morten Kloster | Norway | 10 | Gold Medal |
| Lei Xia | People's Republic of China | 11 | Gold Medal |
| Qiang Lu | People's Republic of China | 12 | Gold Medal |
| Derrick Bass | United States of America | 13 | Gold Medal |
| Ioan Mihai Mitrea | Romania | 14 |  Silver Medal |
| Péter Falus | Hungary | 15 | Silver Medal |
| Kingsley Reavell | United Kingdom | 16 | Silver Medal |
| Octavian Teodorescu | Romania | 17 | Silver Medal |
| Florea Horatiu Stoica | Romania | 18 | Silver Medal |
| Hannes Sakulin | Austria | 19 | Silver Medal |
| Filip Münz | Czechoslovakia | 20 | Silver Medal |
| Robert Michael Jarvis | United States of America | 21 | Silver Medal |
| Leszek Motyka | Poland | 22 | Silver Medal |
| Chris Stolk | Netherlands | 23 | Silver Medal |
| Sergei Dobrovolski | Union of Soviet Socialist Republics | 24 |  Bronze Medal |
| Aykutlu Dâne | Türkiye | 25 | Bronze Medal |
| Michał Rams | Poland | 26 | Bronze Medal |
| Constantin Donea | Romania | 27 | Bronze Medal |
| Cristian Calin-Radu | Romania | 28 | Bronze Medal |
| András Boncz | Hungary | 29 | Bronze Medal |
| Stephen Ong | Australia | 30 | Bronze Medal |
| Filippo Fiori | Italy | 31 | Bronze Medal |
| Olgierd Cybulski | Poland | 32 | Bronze Medal |
| Karel Netočný | Czechoslovakia | 33 | Bronze Medal |
| István Daruka | Hungary | 34 | Bronze Medal |
| Ralf Seidel | Germany | 35 | Bronze Medal |
| Sujint Wangsuya | Thailand | 36 | Bronze Medal |
| Mahmood Reza Kasnavi | Islamic Republic of Iran | 37 | Bronze Medal |
| Harri Haanpaa | Finland | 38 | Bronze Medal |
| Esfandiar Bamdad | Islamic Republic of Iran | 39 | Bronze Medal |
| John Funnell | United Kingdom | 40 | Bronze Medal |
| Cvetan Cheshkov | Bulgaria | 41 | Bronze Medal |
| Petter Cotton | Australia | 42 | Bronze Medal |
| Mats Lundberg | Sweden | 43 | Bronze Medal |
| Peter Langfelder | Czechoslovakia | 44 | Bronze Medal |
| Adrian Toutoungi | United Kingdom | 45 | Bronze Medal |
| Vincas Tamosiunas | Union of Soviet Socialist Republics | 46 | Bronze Medal |
| Georgios Ioannou | Cyprus | 47 | Bronze Medal |
| Babak Amir Parviz | Islamic Republic of Iran | 48 | Bronze Medal |
| Peter Grenholm | Sweden | 49 | Bronze Medal |
| Valentin Kostov | Bulgaria | 50 | Bronze Medal |
| Krassimir Fotev | Bulgaria | 51 | Bronze Medal |
| Du'c Hoang | Singapore | 52 | Bronze Medal |
| Han-Kwang Nienhuys | Netherlands | 53 | Bronze Medal |
| Raoul Trines | Netherlands | 54 | Bronze Medal |
| Leon Menzon Kalet | Cuba | 55 |  Honourable Mention
|
| Petr Tobiška | Czechoslovakia | 56 | Honourable Mention
|
| Kerwyn Foo | Australia | 57 | Honourable Mention
|
| Hui Tay Kwang | Singapore | 58 | Honourable Mention
|
| Martin Oettel | Germany | 59 | Honourable Mention
|
| Roshan Ganeshan | Australia | 60 | Honourable Mention
|
| Alireza Nasiri | Islamic Republic of Iran | 61 | Honourable Mention
|
| Harri Lappalainen | Finland | 62 | Honourable Mention
|
| Eric David Miller | United States of America | 63 | Honourable Mention
|
| Claro Antonio Noda Diaz | Cuba | 64 | Honourable Mention
|
| Carl J. Norton-Firth | United Kingdom | 65 | Honourable Mention
|
| Nikolai Darmenov | Bulgaria | 66 | Honourable Mention
|
| Jan De Wit | Netherlands | 67 | Honourable Mention
|
| Martin Zeindl | Austria | 68 | Honourable Mention
|
| Jorgen Lorentz | Norway | 69 | Honourable Mention
|
| Mirko Javurek | Austria | 70 | Honourable Mention
|
| Andreas Wichmann | Germany | 71 | Honourable Mention
|
| Kacper Sokołowski | Poland | 72 | Honourable Mention
|
| Guenter Guttoff | Germany | 73 | Honourable Mention
|
| Toby Gifford | Australia | 74 | Honourable Mention
|
| Magnus Stefansson | Iceland | 75 | Honourable Mention
|
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