The 1990 480 km of Spa was the fourth round of the 1990 World Sportscar Championship season, taking place at Circuit de Spa-Francorchamps, Belgium. It took place on June 3, 1990.
Class winners in bold. Cars failing to complete 75% of the winner's distance marked as Not Classified (NC).
| Pos | Class | No | Team | Drivers | Chassis | Tyre | Laps |
|---|---|---|---|---|---|---|---|
| Engine | |||||||
| 1 | C | 2 |  Team Sauber Mercedes | Jochen Mass Karl Wendlinger | Mercedes-Benz C11 | 70 | |
| Mercedes-Benz M119 5.0L Turbo V8 | |||||||
| 2 | C | 4 |  Silk Cut Jaguar | Andy Wallace Jan Lammers | Jaguar XJR-11 | 70 | |
| Jaguar JV6 3.5L Turbo V6 | |||||||
| 3 | C | 23 |  Nissan Motorsports International | Julian Bailey Kenny Acheson | Nissan R90CK | 70 | |
| Nissan VHR35Z 3.5L Turbo V8 | |||||||
| 4 | C | 22 | Spice Engineering |  Fermín Vélez | Spice SE90C | 69 | |
| Ford Cosworth DFR 3.5L V8 | |||||||
| 5 | C | 15 |  Brun Motorsport |  Oscar Larrauri Harald Huysman | Porsche 962C | 69 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 6 | C | 14 | Richard Lloyd Racing | Manuel Reuter Steven Andskär | Porsche 962C GTi | 69 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 7 | C | 7 | Joest Porsche Racing |  Bob Wollek Frank Jelinski | Porsche 962C | 69 | |
| Porsche Type-935 3.2L Turbo Flat-6 | |||||||
| 8 | C | 1 | Team Sauber Mercedes |  Mauro Baldi Jean-Louis Schlesser | Mercedes-Benz C11 | 68 | |
| Mercedes-Benz M119 5.0L Turbo V8 | |||||||
| 9 | C | 10 | Porsche Kremer Racing | Bernd Schneider Sarel van der Merwe | Porsche 962CK6 | 68 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 10 | C | 24 | Nissan Motorsports International | Mark Blundell Gianfranco Brancatelli | Nissan R90CK | 67 | |
| Nissan VHR35Z 3.5L Turbo V8 | |||||||
| 11 | C | 27 | Obermaier Racing | Otto Altenbach Jürgen Lässig | Porsche 962C | 67 | |
| Porsche 3.0L Turbo Flat-6 | |||||||
| 12 | C | 11 | Porsche Kremer Racing Convector | Anthony Reid Anders Olofsson | Porsche 962CK6 | 66 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 13 | C | 32 | Konrad Motorsport | Franz Konrad Harri Toivonen | Porsche 962C | 65 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 14 | C | 17 | Brun Motorsport | Massimo Sigala Bernard Santal | Porsche 962C | 65 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 15 | C | 6 | Joest Racing | Henri Pescarolo Jean-Louis Ricci | Porsche 962C | 65 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 16 | C | 9 | Joest Porsche Racing | Stanley Dickens "John Winter" | Porsche 962C | 65 | |
| Porsche Type-935 3.2L Turbo Flat-6 | |||||||
| 17 | C | 19 | Team Davey | Tim Lee-Davey Giovanni Lavaggi | Porsche 962C | 65 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 18 | C | 36 | Toyota Team Tom's | Johnny Dumfries John Watson | Toyota 89C-V | 63 | |
| Toyota R36V 3.6L Turbo V8 | |||||||
| 19 | C | 28 | Chamberlain Engineering | Cor Euser Mario Hytten | Spice SE89C | 63 | |
| Ford Cosworth DFZ 3.5L V8 | |||||||
| 20 | C | 12 | Courage Compétition |  Costas Los Bernard Thuner | Cougar C24S | 62 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 21 | C | 39 | Swiss Team Salamin | Antoine Salamin Luigi Taverna | Porsche 962C | 60 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 22 | C | 34 | Equipe Alméras Fréres | Jacques Alméras Jean-Marie Alméras | Porsche 962C | 58 | |
| Porsche Type-935 2.8L Turbo Flat-6 | |||||||
| 23 | C | 40 | The Berkeley Team London | Ranieri Randaccio "Stingbrace" | Spice SE89C | 58 | |
| Ford Cosworth DFZ 3.5L V8 | |||||||
| 24 | C | 30 | GP Motorsport | Jari Nurminen Quirin Bovy | Spice SE89C | 56 | |
| Ford Cosworth DFR 3.5L V8 | |||||||
| 25 | C | 35 | Louis Descartes | François Migault Denis Morin | ALD C289 | 56 | |
| Ford Cosworth DFZ 3.5L V8 | |||||||
| 26 DNF | C | 16 | Brun Motorsport | Jesús Pareja Walter Brun | Porsche 962C | 62 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 27 DNF | C | 3 | Silk Cut Jaguar | Martin Brundle | Jaguar XJR-11 | 46 | |
| Jaguar JV6 3.5L Turbo V6 | |||||||
| 28 DNF | C | 8 | Joest Porsche Racing | Jonathan Palmer Derek Bell | Porsche 962C | 43 | |
| Porsche Type-935 3.2L Turbo Flat-6 | |||||||
| 29 DNF | C | 29 | Chamberlain Engineering | Nick Adams Charles Zwolsman | Spice SE89C | 40 | |
| Ford Cosworth DFZ 3.5L V8 | |||||||
| 30 DNF | C | 13 | Courage Compétition | Pascal Fabre Michel Trollé | Cougar C24S | 28 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| 31 DNF | C | 26 | Obermaier Racing | Harald Grohs Jürgen Oppermann | Porsche 962C | 17 | |
| Porsche Type-935 3.0L Turbo Flat-6 | |||||||
| DNS | C | 21 | Spice Engineering | Fermín Vélez Tim Harvey | Spice SE90C | - | |
| Ford Cosworth DFR 3.5L V8 | |||||||
| DNS | C | 37 | Toyota Team Tom's | Geoff Lees Aguri Suzuki | Toyota 90C-V | - | |
| Toyota R36V 3.6L Turbo V8 | |||||||
| DNS | C | 41 | Alba Formula Team | Marco Brand Fabio Mancini | Alba AR20 | - | |
| Subaru (Motori Moderni) 1235 3.5L Flat-12 |