Debutants
Moreno Moser is the youngest debutant in World Championships in 2012. There are 60 debutants.
| # | Rider | Team | Age |
|---|---|---|---|
| 1 | MOSER Moreno | Italy | 21y + 273d |
| 2 | MATTHEWS Michael | Australia | 21y + 363d |
| 3 | ROWE Luke | Great Britain | 22y + 197d |
| 4 | QUINTANA Nairo | Colombia | 22y + 232d |
| 5 | BRÄNDLE Matthias | Austria | 22y + 291d |
| 6 | BETANCUR Carlos | Colombia | 22y + 346d |
| 7 | TRENTIN Matteo | Italy | 23y + 52d |
| 8 | ULISSI Diego | Italy | 23y + 70d |
| 9 | SLAGTER Tom-Jelte | Netherlands | 23y + 84d |
| 10 | MONSALVE Yonathan | Venezuela | 23y + 87d |
| 11 | LINDEMAN Bert-Jan | Netherlands | 23y + 99d |
| 12 | MOYANO Enzo Josué | Argentina | 23y + 221d |
| 13 | JANSE VAN RENSBURG Reinardt | South Africa | 23y + 233d |
| 14 | ŠIŠKEVIČIUS Evaldas | Lithuania | 23y + 268d |
| 15 | SAGAN Juraj | Slovakia | 23y + 275d |
| 16 | VICHOT Arthur | France | 23y + 302d |
| 17 | SCHORN Daniel | Austria | 23y + 338d |
| 18 | DOWSETT Alex | Great Britain | 23y + 356d |
| 19 | KUMP Marko | Slovenia | 24y + 14d |
| 20 | CHAABANE Hichem | Algeria | 24y + 44d |
| 21 | YEUNG Ronald | Hong Kong China | 24y + 55d |
| 22 | SERGENT Jesse | New Zealand | 24y + 77d |
| 23 | MEZGEC Luka | Slovenia | 24y + 88d |
| 24 | NAVARDAUSKAS Ramūnas | Lithuania | 24y + 237d |
| 25 | PAPOK Siarhei | Belarus | 24y + 261d |
| 26 | HOWES Alex | United States | 24y + 266d |
| 27 | HENAO Sergio | Colombia | 24y + 288d |
| 28 | JANSE VAN RENSBURG Jacques | South Africa | 25y + 17d |
| 29 | CASTROVIEJO Jonathan | Spain | 25y + 149d |
| 30 | SMUKULIS Gatis | Latvia | 25y + 161d |
| 31 | POLIVODA Oleksandr | Ukraine | 25y + 176d |
| 32 | MCLAUGHLIN Ronan | Ireland | 25y + 196d |
| 33 | ASADOV Elchin | Azerbaijan | 25y + 224d |
| 34 | RUSLI Amir Mustafa | Malaysia | 25y + 231d |
| 35 | GRASHEV Martin | Bulgaria | 25y + 253d |
| 36 | PLIUȘCHIN Alexandr | Moldova | 25y + 254d |
| 37 | BOUET Maxime | France | 25y + 325d |
| 38 | LOH Sea Keong | Malaysia | 25y + 326d |
| 39 | BUTS Vitaliy | Ukraine | 25y + 335d |
| 40 | SCHÄR Michael | Switzerland | 25y + 360d |
| 41 | COPPEL Jérôme | France | 26y + 48d |
| 42 | DUARTE Fabio | Colombia | 26y + 104d |
| 43 | GESCHKE Simon | Germany | 26y + 194d |
| 44 | ŠTYBAR Zdeněk | Czech Republic | 26y + 287d |
| 45 | MEERSMAN Gianni | Belgium | 26y + 293d |
| 46 | DELAGE Mickaël | France | 27y + 48d |
| 47 | PETROV GEORGIEV Georgi | Bulgaria | 27y + 51d |
| 48 | HATANAKA Yusuke | Japan | 27y + 94d |
| 49 | KRIVTSOV Dmytro | Ukraine | 27y + 173d |
| 50 | CATALDO Dario | Italy | 27y + 190d |
| 51 | PORTE Richie | Australia | 27y + 237d |
| 52 | GATTO Oscar | Italy | 27y + 266d |
| 53 | TIERNAN-LOCKE Jonathan | Great Britain | 27y + 272d |
| 54 | JÉRÔME Vincent | France | 27y + 302d |
| 55 | TANNER David | Australia | 27y + 359d |
| 56 | MARCATO Marco | Italy | 28y + 225d |
| 57 | DEVENYNS Dries | Belgium | 29y + 63d |
| 58 | ROY Jérémy | France | 29y + 93d |
| 59 | FIRSANOV Sergey | Russia | 30y + 82d |
| 60 | MULLER Mauricio | Argentina | 30y + 339d |