The World Junior Alpine Skiing Championships 2012 were the 31st World Junior Alpine Skiing Championships, held between 29 February and 9 March 2012 in Roccaraso, Italy.
| Downhill | Ryan Cochran-Siegle | 1:11.99 | Ralph Weber | 1:12.08 | Nils Mani | 1:12.48 | |
| Super-G | Ralph Weber | 1:02.73 | Nils Mani | 1:02.93 | Johannes Strolz | 1:03.30 | |
| Giant Slalom | Henrik Kristoffersen | 2:39.50 | Thomas Dressen | 2:40.25 | Žan Kranjec | 2:40.35 | |
| Slalom | Santeri Paloniemi | 1:38.44 | Henrik Kristoffersen | 1:39.70 | Reto Schmidiger | 1:39.93 | |
| Combined | Ryan Cochran-Siegle | 31.49 points | Henrik Kristoffersen | 44.21 | Žan Kranjec | 60.62 |
| Downhill Canceled | N/A | N/A | N/A | N/A | N/A | N/A | |
| Super-G | Annie Winquist | 1:06.99 | Joana Hählen | 1:07.02 | Ragnhild Mowinckel | 1:07.04 | |
| Giant Slalom | Ragnhild Mowinckel | 2:40.02 | Sara Hector | 2:40.28 | Adeline Baud | 2:40.80 | |
| Slalom | Stephanie Brunner | 1:41.19 | Paulina Grassl | 1:42.31 | Petra Vlhová | 1:42.69 | |
| Combined | Ragnhild Mowinckel | 11.66 points | Annie Winquist | 31.00 | Corinne Suter | 31.03 |
| Team event | Ula Hafner Žan Kranjec Ana Bucik Mišel Žerak | Karoline Pichler Giordano Ronci Nicole Agnelli Alex Zingerle | Jasmina Suter Luca Aerni Andrea Ellenberger Bernhard Niederberger | ||||