| Grand Prix: | Yugoslavian |
| Flag: | Yugoslavia |
| Official Name: | Yu Grand Prix[1] [2] [3] |
| Location: | Automotodrom Rijeka |
| Course Mi: | 2.590 |
| Course Km: | 4.168 |
| Race No: | 5 |
| Season No: | 12 |
| Date: | 28 June |
| Year: | 1986 |
| Pole Rider 500: | Randy Mamola |
| Pole Rider 500 Country: | USA |
| Pole Time 500: | 1:31.550 |
| Fast Rider 500: | Eddie Lawson |
| Fast Rider 500 Country: | USA |
| Fast Time 500: | 1:32.120 |
| First Rider 500: | Eddie Lawson |
| First Rider 500 Country: | USA |
| Second Rider 500: | Randy Mamola |
| Second Rider 500 Country: | USA |
| Third Rider 500: | Wayne Gardner |
| Third Rider 500 Country: | AUS |
| Pole Rider 250: | Carlos Lavado |
| Pole Rider 250 Country: | VEN |
| Pole Time 250: | 1:33.760 |
| Fast Rider 250: | Carlos Lavado |
| Fast Rider 250 Country: | VEN |
| Fast Time 250: | 1:33.430 |
| First Rider 250: | Sito Pons |
| First Rider 250 Country: | ESP |
| Second Rider 250: | Jean-François Baldé |
| Second Rider 250 Country: | FRA |
| Third Rider 250: | Dominique Sarron |
| Third Rider 250 Country: | FRA |
| Pole Rider 125: | No 125cc race was held |
| Fast Rider 125: | No 125cc race was held |
| First Rider 125: | No 125cc race was held |
| Second Rider 125: | No 125cc race was held |
| Third Rider 125: | No 125cc race was held |
| Pole Rider 80: | Jorge Martínez |
| Pole Rider 80 Country: | ESP |
| Fast Rider 80: | Jorge Martínez |
| Fast Rider 80 Country: | ESP |
| First Rider 80: | Jorge Martínez |
| First Rider 80 Country: | ESP |
| Second Rider 80 Country: | SUI |
| Third Rider 80: | Ian McConnachie |
| Third Rider 80 Country: | GBR |
The 1986 Yugoslavian motorcycle Grand Prix was the fifth round of the 1986 Grand Prix motorcycle racing season. It took place on the weekend of 26–28 June 1986 at the Automotodrom Rijeka.
| Pos. | Rider | Team | Manufacturer | Time/Retired | Points | |||
|---|---|---|---|---|---|---|---|---|
| 1 |  Eddie Lawson | Marlboro Yamaha Team Agostini | Yamaha | 49'55.810 | 15 | |||
| 2 | Randy Mamola | Team Lucky Strike Roberts | Yamaha | +10.740 | 12 | |||
| 3 |  Wayne Gardner | Rothmans Team HRC | Honda | +11.360 | 10 | |||
| 4 |  Rob McElnea | Marlboro Yamaha Team Agostini | Yamaha | +24.320 | 8 | |||
| 5 | Mike Baldwin | Team Lucky Strike Roberts | Yamaha | +32.320 | 6 | |||
| 6 |  Christian Sarron | Team Gauloises Blondes Yamaha | Yamaha | +37.340 | 5 | |||
| 7 | Raymond Roche | Racing Team Katayama | Honda | +49.910 | 4 | |||
| 8 |  Shunji Yatsushiro | Team HRC | Honda | +1'19.250 | 3 | |||
| 9 | Dave Petersen | HB Suzuki GP Team | Suzuki | +1 lap | 2 | |||
| 10 | Paul Lewis | Skoal Bandit Heron Suzuki | Suzuki | +1 lap | 1 | |||
| 11 | Wolfgang Von Muralt | Frankonia-Suzuki | Suzuki | +1 lap | ||||
| 12 |  Juan Garriga | Cagiva | +1 lap | |||||
| 13 | Boet van Dulmen | Honda | +1 lap | |||||
| 14 |  Eero Hyvärinen | Honda | +1 lap | |||||
| 15 | Marco Gentile | Fior | Fior | +1 lap | ||||
| 16 |  Marco Papa | Honda | +1 lap | |||||
| 17 | Fabio Barchitta | Honda | +1 lap | |||||
| 18 | Mile Pajic | Stichting Netherlands Racing Team | Honda | +2 laps | ||||
| 19 | Robert Jung | Honda | +2 laps | |||||
| 20 |  Andreas Leuthe | Honda | +2 laps | |||||
| 21 | Marco Marchesani | Suzuki | +2 laps | |||||
| 22 | Pavol Dekánek | Suzuki | +2 laps | |||||
| 23 | Maarten Duyzers | Suzuki | +2 laps | |||||
| 24 | Leandro Becheroni | Suzuki | +2 laps | |||||
| Ret |  Josef Doppler | HRC Grieskirched | Honda | Retired | ||||
| Ret | Helmut Schütz | Rallye Sport | Honda | Accident | ||||
| Ret | Fabio Biliotti | Team Italia | Honda | Accident | ||||
| Ret | Henk van der Mark | Honda | Accident | |||||
| Ret | Ron Haslam | Team ROC | Honda | Retired | ||||
| Ret | Pierfrancesco Chili | HB Suzuki GP Team | Honda | Retired | ||||
| Ret | Manfred Fischer | Team Hein Gericke | Honda | Retired | ||||
| Ret | Armando Errico | Suzuki | Retired | |||||
| DNS | Dietmar Marehardt | Honda | Did not start | |||||
| DNS |  Didier de Radiguès | Rollstar Honda Racing Team | Honda | Did not start | ||||
| DNS | Gustav Reiner | Honda Deutschland | Honda | Did not start | ||||
| DNS | Simon Buckmaster | Honda | Did not start | |||||
| DNQ | Rudolf Zeller | Honda | Did not qualify | |||||
| DNQ | Dimitris Papandreou | Yamaha | Did not qualify | |||||
| DNQ | Detlef Vogt | Suzuki | Did not qualify | |||||
| DNQ | José Parra | Honda | Did not qualify | |||||
| Sources: [4] [5] | ||||||||