| Squadra | Nazione | Anno | Direttore Sportivo | |
| 51 | G.S. Mecair | ITA | 1990 | - |
| 52 | G.S. Zalf Euromobil Fior | ITA | 1990 | BERALDO Aldo, GAZZOLA Mario |
| 53 | Giessegi | ARG | 1990 | - |
| 54 | Gis Gelati - Benotto - Juvenes San Marino | SMR | 1990 | MASCIARELLI Palmiro, GINI Franco, BERARDI Palmo Marino |
| 55 | Gonso | SUI | 1990 | - |
| 56 | Gran Prix Cycles | AUS | 1990 | - |
| 57 | Guerciotti | RFA | 1990 | - |
| 58 | Hek Bouwmaterialen | NED | 1990 | - |
| 59 | Helvetia - La Suisse | SUI | 1990 | KOECHLI Paul, ROUSSEL Bruno |
| 60 | Hermann Radsport Zenter | SUI | 1990 | - |
| 61 | Hi Tune - Goodyear | AUS | 1990 | - |
| 62 | Hillman Cycles | AUS | 1990 | - |
| 63 | Histor - KB - Sigma | BEL | 1990 | TEIRLINCK Willy, VALCKE Patrick, VAN LOOY Frans |
| 64 | I.O.C. - Tulip Computers - ADR | BEL | 1990 | DE CAUWER José, VAARTEN Michel, WAYENBERG Dirk, JOSSART Willy |
| 65 | Isoglass - Garden Wood - Tönissteiner | BEL | 1990 | DE VLAEMINCK Roger, LANDUYT Luc |
| 66 | Italbonifica - Navigare - Conti | ITA | 1990 | REVERBERI Bruno, ROSSI Graziano |
| 67 | Japan Proroad Project - Nichinao | JPN | 1990 | FUJISITA Masahiro, TOKUNAGA Takakazu |
| 68 | Jolly Componibili - Club 88 | ITA | 1990 | BARTOLOZZI Waldemaro, BIATTA Giuliano, BASSO Marino |
| 69 | Kelme - Ibexpress | ESP | 1990 | CARRASCO GUERRA Rafael, RAVELO Marcos, SUNOL DARNES Juan |
| 70 | KHS - Suntour | USA | 1990 | - |
| 71 | KJC Carpets - Thornhill | GBR | 1990 | - |
| 72 | Kotter's Albuch | RFA | 1990 | - |
| 73 | Kuiper van Noord - Elro Snacks | NED | 1990 | - |
| 74 | La William - Saltos - Fondua - Euroclean | BEL | 1990 | DE BAEREMAEKER Paul, PEVENAGE Rudy, GEUKENS Willy |
| 75 | Lada | URS | 1990 | - |
| 76 | Lehmann - Muller | SUI | 1990 | - |
| 77 | Liberia - Grenoble Cyclisme | FRA | 1990 | - |
| 78 | Lotto - Superclub - MBK | BEL | 1990 | BRAECKEVELT Joseph, VANDENBROUCKE Jean-Luc |
| 79 | Malvor - Sidi | ITA | 1990 | GUADRINI Enrico, ZANDEGU' Dino |
| 80 | Miniflat - Veranda | BEL | 1990 | - |
| 81 | Mosoca - Galli - Eurocar | SUI | 1990 | PAINDAVEINE Didier |
| 82 | National TV - Topsport | RSA | 1990 | - |
| 83 | Nordkystens - Tagdaeking | DEN | 1990 | - |
| 84 | O.N.C.E. | ESP | 1990 | SAIZ BALBAS Manuel, GARCIA QUILON Santiago |
| 85 | Ochsner - Gatorade | POL | 1990 | - |
| 86 | Offtex - Ricci | GBR | 1990 | - |
| 87 | Orima - Cantanhede | POR | 1990 | SANTOS DE OLIVEIRA Vitor José |
| 88 | Out Spokin' | USA | 1990 | - |
| 89 | Panasonic - Sportlife | NED | 1990 | PLANCKAERT Walter, POST Peter, VAN DEN HAUTE Ferdinand |
| 90 | Patties - Grand Prix | AUS | 1990 | - |
| 91 | PDM - Concorde - Ultima | NED | 1990 | BOYER Jonathan, GISBERS Jan, KNETEMANN Gerrie, VAN DER KRUIJS Peter |
| 92 | Pegasus | SUI | 1990 | - |
| 93 | Percy Bilton - AMP | GBR | 1990 | WILLETT Len |
| 94 | Peugeot UK | GBR | 1990 | BURNEY Simon |
| 95 | Pony Malta - Avianca | COL | 1990 | TENJO Jorge, MAYORGA Hector Julio |
| 96 | Postobon - Ryalcao | COL | 1990 | MEZA Raul, RENDON Elkin Dario |
| 97 | Puertas Mavisa | ESP | 1990 | RUPEREZ RINCON Faustino, OCANIA PERNIA Luis |
| 98 | R.M.O. - Mavic - Liberia | FRA | 1990 | RUMEAU Christian, VALLET Bernard |
| 99 | Raleigh - Itm | GBR | 1990 | MORRISON Mick |
| 100 | RBC | AUS | 1990 | - |
RSS

