Debutants
José Luis Navarro is the youngest debutant in Tirreno-Adriatico in 1984. There are 12 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | NAVARRO José Luis | Zor - Gemeaz | 21y + 224d |
| 2 | GAIGNE Dominique | Renault - Elf | 22y + 249d |
| 3 | ZADROBILEK Gerhard | Atala - Campagnolo | 22y + 259d |
| 4 | HANEGRAAF Jacques | Kwantum Hallen - Decosol | 23y + 85d |
| 5 | MÄCHLER Erich | Cilo - Aufina | 23y + 166d |
| 6 | RODRÍGUEZ MAGRO Jesús | Zor - Gemeaz | 23y + 285d |
| 7 | ZIMMERMANN Urs | Cilo - Aufina | 24y + 100d |
| 8 | VAN DER POEL Adrie | Kwantum Hallen - Decosol | 24y + 265d |
| 9 | WORRE Jesper | Sammontana | 24y + 277d |
| 10 | MADIOT Marc | Renault - Elf | 24y + 327d |
| 11 | BOYER Jonathan | Supermercati Brianzoli | 28y + 152d |
| 12 | ZOETEMELK Joop | Kwantum Hallen - Decosol | 37y + 96d |