Debutants
Jean-Michel Tessier is the youngest debutant in World Championships in 1999. There are 57 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | TESSIER Jean-Michel | France | 21y + 292d |
| 2 | BASSO Ivan | Italy | 21y + 318d |
| 3 | FOFONOV Dmitriy | Kazakhstan | 23y + 56d |
| 4 | BRUYLANDTS Dave | Belgium | 23y + 90d |
| 5 | MONTGOMERY Sven | Switzerland | 23y + 153d |
| 6 | YAKOVLEV Serguei | Kazakhstan | 23y + 172d |
| 7 | SCHWEDA Raphael | Germany | 23y + 176d |
| 8 | BELOHVOŠČIKS Raivis | Latvia | 23y + 262d |
| 9 | JOACHIM Benoît | Luxembourg | 23y + 269d |
| 10 | ORAS Allan | Estonia | 23y + 294d |
| 11 | LEAPER Tom | Australia | 23y + 337d |
| 12 | LANDIS Floyd | United States | 23y + 361d |
| 13 | KLÖDEN Andreas | Germany | 24y + 110d |
| 14 | EL NADI Amer | Egypt | 24y + 128d |
| 15 | SØRENSEN Nicki | Denmark | 24y + 149d |
| 16 | GLOMSER Gerrit | Austria | 24y + 192d |
| 17 | MURN Uroš | Slovenia | 24y + 243d |
| 18 | HRUŠKA Jan | Czech Republic | 24y + 248d |
| 19 | DEAN Julian | New Zealand | 24y + 255d |
| 20 | BERGÈS Stéphane | France | 24y + 274d |
| 21 | O'NEILL Nathan | Australia | 24y + 321d |
| 22 | JENNER Christopher | New Zealand | 24y + 341d |
| 23 | MCKENZIE David | Australia | 25y + 65d |
| 24 | WROLICH Peter | Austria | 25y + 133d |
| 25 | VESTØL Bjørnar | Norway | 25y + 135d |
| 26 | MÜHLBACHER Thomas | Austria | 25y + 152d |
| 27 | RUŠKYS Saulius | Lithuania | 25y + 175d |
| 28 | VELO Marco | Italy | 25y + 215d |
| 29 | ULLRICH Jan | Germany | 25y + 312d |
| 30 | LEIPHEIMER Levi | United States | 25y + 351d |
| 31 | RODRIGUEZ Fred | United States | 26y + 37d |
| 32 | DÍAZ Pedro | Spain | 26y + 132d |
| 33 | CHAURREAU Íñigo | Spain | 26y + 179d |
| 34 | GRABSCH Ralf | Germany | 26y + 186d |
| 35 | ZANETTI Mauro | Italy | 26y + 188d |
| 36 | SILOVS Juris | Latvia | 26y + 256d |
| 37 | MARTÍN PERDIGUERO Miguel Ángel | Spain | 26y + 361d |
| 38 | SERPELLINI Marco | Italy | 27y + 57d |
| 39 | GATES Nick | Australia | 27y + 214d |
| 40 | BOVEN Jan | Netherlands | 27y + 224d |
| 41 | BLIJLEVENS Jeroen | Netherlands | 27y + 285d |
| 42 | SHEFER Alexandre | Kazakhstan | 28y + 45d |
| 43 | KRASINSKI Artur | Poland | 28y + 114d |
| 44 | RITTSEL Martin | Sweden | 28y + 196d |
| 45 | GAUTE HØLESTØL Svein | Norway | 28y + 223d |
| 46 | DELRIEU David | France | 28y + 232d |
| 47 | SEDUN Dimitri | Russia | 28y + 281d |
| 48 | FEDENKO Oleksandr | Ukraine | 28y + 294d |
| 49 | PIZIKS Arvis | Latvia | 30y + 28d |
| 50 | LAISEKA Roberto | Spain | 30y + 115d |
| 51 | BARBERO Sergio | Italy | 30y + 266d |
| 52 | SCHLICKAU Michael | Germany | 30y + 276d |
| 53 | MENGIN Christophe | France | 31y + 37d |
| 54 | MAIGNAN Gilles | France | 31y + 72d |
| 55 | GRAGUS Eddy | United States | 31y + 237d |
| 56 | ROMANIK Radosław | Poland | 32y + 267d |
| 57 | MONINGER Scott | United States | 32y + 355d |