| Squadra | Nazione | Anno | Direttore Sportivo | |
| 1 | 7 Eleven - Hoonved | USA | 1990 | DEJONCKHEERE Noel, DEJONCKHEERE Richard, NEEL Michael, OCHOWICZ James Lionel |
| 2 | A.E.E. Accurate | BEL | 1990 | - |
| 3 | Air Marshall | GBR | 1990 | MARSHALL Howard |
| 4 | Alfa Lum | SMR | 1990 | FRANCHINI Primo, MOROZOV Nikolai, BRAUDE Wladimir |
| 5 | Alguerra - Componauto | POR | 1990 | FERNANDES DOMINGUES Venceslau |
| 6 | Alpine Colorado - Pinarello | USA | 1990 | WIGHT Chris |
| 7 | American Commerce National Bank | USA | 1990 | ABRAHAMS Pablo |
| 8 | Amore & Vita - Fanini | ITA | 1990 | VANNUCCI Giorgio, LANZONI Giuseppe |
| 9 | Aquilla | USA | 1990 | - |
| 10 | Ariostea | ITA | 1990 | FERRETTI Giancarlo, VANDI Alfio |
| 11 | Artiach - Royal | ESP | 1990 | PERURENA TELLECHEA Domingo, GINER RODRIGO Francisco, STOFBERG Albert |
| 12 | Attractieverhuur Moonen | NED | 1990 | - |
| 13 | Atum Bom Petisco - Tavira | POR | 1990 | MARTA SANTOS Joao Adriano |
| 14 | Avibom - Valouro - Lousa | POR | 1990 | BRAS SIMOES Antonio Manuel, BRANCO MADURO Manuel |
| 15 | Bairnsdale - Marriotts | AUS | 1990 | - |
| 16 | Banana - Falcon | GBR | 1990 | LAMBERT Keith |
| 17 | Banesto | ESP | 1990 | ECHEVARRI GARCIA José Miguel |
| 18 | Benotto - Ralf Jantzen | RFA | 1990 | - |
| 19 | Bezemer | NED | 1990 | - |
| 20 | BH - Amaya Seguros | ESP | 1990 | LOPEZ CERRON José Luis, MINGUEZ BELLOSTA Javier |
| 21 | BIC | RSA | 1990 | - |
| 22 | Bicycle Entrepreneur | AUS | 1990 | - |
| 23 | Bike Power | AUS | 1990 | - |
| 24 | Bleiker - Federal | SUI | 1990 | BLEIKER Rudi |
| 25 | Bowflex | GBR | 1990 | - |
| 26 | Bruynooghe | BEL | 1990 | - |
| 27 | Buckler - Colnago - Decca | NED | 1990 | RAAS Jan, VAN DER SCHUEREN Hilaire, ZOETEMELK Joop |
| 28 | Cafe de Colombia | COL | 1990 | VALDIVIESO Pedro Pablo, CASTRO José Gabriel, NINO Rafael |
| 29 | Calcado Ruquita - Philips - Feirense | POR | 1990 | ANDRADE Joaquim, MENDES REIS DIAS Fernando |
| 30 | Campion - Nutrition | USA | 1990 | - |
| 31 | Carrera Jeans - Vagabond | ITA | 1990 | BOIFAVA Davide, MARTINELLI Giuseppe, QUINTARELLI Sandro |
| 32 | Castorama - Raleigh | FRA | 1990 | CADIOU Jacques, GUIMARD Cyrille, QUILFEN Bernard |
| 33 | Chateau D'Ax - Huni - Diadora | ITA | 1990 | ALGERI Vittorio, CORTI Claudio, STANGA Gianluigi |
| 34 | Clas - Cajastur | ESP | 1990 | FERNANDEZ MARTIN Juan, SUAREZ CUEVA Jesus |
| 35 | Concorde - Campagnolo | SUI | 1990 | - |
| 36 | Coors Light | USA | 1990 | PETTYJOHN Len |
| 37 | Crest - Huufy | USA | 1990 | - |
| 38 | Crown's Printers - Chafes - Giant | GBR | 1990 | SHAW George |
| 39 | Cytomax - Redlands | USA | 1990 | - |
| 40 | Danena | NED | 1990 | - |
| 41 | Del Tongo - Rex | ITA | 1990 | ABETONI Paolo, PAOLINI Enrico |
| 42 | Diamant - Rider | BEL | 1990 | - |
| 43 | Diana - Colnago - Animex | ITA | 1990 | ALGERI Pietro, LANG Czeslaw |
| 44 | Die Continentale | GER | 1990 | - |
| 45 | Elro Snacks - Hisfa - Colnago | NED | 1990 | ELEN Jos sr, GODDE Peter |
| 46 | Eurocar Tamoil | ITA | 1990 | - |
| 47 | Ever Ready - Halfords | GBR | 1990 | BENNETT Michael, BAYTON Phil |
| 48 | Festina - Lotus | ESP | 1990 | MORENO CACHINERO Miguel, MACHIN RODRIGUEZ Carlos |
| 49 | Frank Pneuhaus - Toyo | SUI | 1990 | THALMANN Robert, GISIGER Daniel |
| 50 | Fuji - Only for Fun | SUI | 1990 | - |
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