Debutants
Luciano Borgognoni is the youngest debutant in Giro d'Italia in 1973. There are 58 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | BORGOGNONI Luciano | Dreher Forte | 21y + 218d |
| 2 | DALLA BONA Giovanni | Dreher Forte | 21y + 239d |
| 3 | LUALDI Valerio | Brooklyn | 21y + 260d |
| 4 | BATTAGLIN Giovanni | Jolly Ceramica | 21y + 300d |
| 5 | MOSER Francesco | Filotex | 21y + 333d |
| 6 | HERMANS Gustaaf | Rokado | 22y + 6d |
| 7 | PARECCHINI Aldo | Molteni | 22y + 148d |
| 8 | GAVAZZI Pierino | Jolly Ceramica | 22y + 165d |
| 9 | MOLINÉRIS Jean-Luc | Flandria - Carpenter - Shimano | 22y + 266d |
| 10 | GAMBAROTTO Piero | Jolly Ceramica | 22y + 325d |
| 11 | WEHRLI Fritz | G.B.C. - Sony - Furzi | 22y + 345d |
| 12 | CONATI Luciano | Scic | 23y + 62d |
| 13 | BONACINA Claudio | Zonca | 23y + 83d |
| 14 | MUGNAINI Gabriele | Filotex | 23y + 96d |
| 15 | RICCOMI Walter | Sammontana | 23y + 120d |
| 16 | MUDDEMANN Karl-Heinz | Rokado | 23y + 123d |
| 17 | BAZZAN Giacomo | Jolly Ceramica | 23y + 125d |
| 18 | KÜSTER Karl-Heinz | Rokado | 23y + 272d |
| 19 | BERGAMO Emanuele | Filotex | 23y + 279d |
| 20 | LEGEAY Roger | Flandria - Carpenter - Shimano | 23y + 283d |
| 21 | VAN LINDEN Rik | Rokado | 23y + 294d |
| 22 | ANTONINI Alessio | Jolly Ceramica | 23y + 345d |
| 23 | ONGARATO Franco | Dreher Forte | 23y + 354d |
| 24 | KUIPER Hennie | Rokado | 24y + 104d |
| 25 | BERTOGLIO Fausto | Brooklyn | 24y + 125d |
| 26 | VAN DE WIELE Jan | Rokado | 24y + 196d |
| 27 | CARDI Ezio | G.B.C. - Sony - Furzi | 24y + 206d |
| 28 | COQUERY François | Flandria - Carpenter - Shimano | 24y + 238d |
| 29 | MORBIATO Giorgio | G.B.C. - Sony - Furzi | 24y + 292d |
| 30 | FOCHESATO Gino | Dreher Forte | 24y + 335d |
| 31 | ROSSI Tullio | Dreher Forte | 24y + 350d |
| 32 | DE MUYNCK Johan | Flandria - Carpenter - Shimano | 24y + 353d |
| 33 | VAN ROOSBROECK Gustaaf | Rokado | 25y + 2d |
| 34 | LANDINI Mauro | Dreher Forte | 25y + 15d |
| 35 | BRENTEGANI Enzo | Jolly Ceramica | 25y + 61d |
| 36 | WIJCKAERT Eric | Flandria - Carpenter - Shimano | 25y + 80d |
| 37 | JULIANO Gaetano | Magniflex | 25y + 104d |
| 38 | AVOGADRI Walter | Zonca | 25y + 111d |
| 39 | DURY Maurice | Flandria - Carpenter - Shimano | 25y + 191d |
| 40 | BUFFA Bruno | Jolly Ceramica | 25y + 198d |
| 41 | DIERICKX André | Flandria - Carpenter - Shimano | 25y + 201d |
| 42 | PECCOLO Alessio | G.B.C. - Sony - Furzi | 25y + 206d |
| 43 | GILSON Roger | Rokado | 25y + 241d |
| 44 | DOMINONI Giuliano | Dreher Forte | 25y + 329d |
| 45 | MARCHETTI Renato | Filotex | 26y + 26d |
| 46 | SUTTER Ueli | Jolly Ceramica | 26y + 63d |
| 47 | DUCREUX Daniel | Flandria - Carpenter - Shimano | 26y + 96d |
| 48 | CONTON Marino | Jolly Ceramica | 26y + 135d |
| 49 | AJA Gonzalo | Kas - Kaskol | 26y + 309d |
| 50 | JIMENEZ Nemesio | Kas - Kaskol | 27y + 97d |
| 51 | JANSSENS Ward | Molteni | 27y + 120d |
| 52 | GUADRINI Enrico | Zonca | 27y + 253d |
| 53 | OSLER Marcello | Sammontana | 27y + 273d |
| 54 | DUCREUX Francis | Flandria - Carpenter - Shimano | 28y + 93d |
| 55 | DAVID Gérard | Flandria - Carpenter - Shimano | 28y + 160d |
| 56 | GRANDE José | Kas - Kaskol | 28y + 226d |
| 57 | RODRÍGUEZ Martín Emilio | Bianchi - Campagnolo | 31y + 34d |
| 58 | KARSTENS Gerben | Rokado | 31y + 124d |