Guyana competed at the 1983 World Championships in Athletics in Helsinki, Finland, from August 7 to 14, 1983.[1]
Men
- Track and road events
| Athlete | Event | Heat | Quarterfinal | Semifinal | Final |
| Result | Rank | Result | Rank | Result | Rank | Result | Rank |
| Earl Haley | 100 metres | 10.77 | 42 | Did not advance |
| 200 metres | 21.55 | 31 q | 21.39w | 26 | Did not advance |
Women
- Track and road events
| Athlete | Event | Heat | Quarterfinal | Semifinal | Final |
| Result | Rank | Result | Rank | Result | Rank | Result | Rank |
| June Griffith | 400 metres | 54.02 | 18 Q | 53.47 | 19 | Did not advance |
- Field events
References
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| Africa | |
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| Asia | |
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| Europe | - Albania
- Austria
- Belgium
- Bulgaria
- Czechoslovakia
- Denmark
- East Germany
- Finland
- France
- Gibraltar
- Great Britain and Northern Ireland
- Greece
- Hungary
- Iceland
- Ireland
- Israel
- Italy
- Luxembourg
- Malta
- Netherlands
- Norway
- Poland
- Portugal
- Romania
- San Marino
- Soviet Union
- Spain
- Sweden
- Switzerland
- Turkey
- West Germany
- Yugoslavia
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| North America | |
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| Oceania | |
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| South America | - Argentina
- Brazil
- Chile
- Colombia
- Ecuador
- Panama
- Paraguay
- Peru
- Uruguay
- Venezuela
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