The 2005 World Youth Championships in Athletics were held in Marrakesh, Morocco on July 13–July 17.

The host stadium was Stade Sidi Youssef Ben Ali.

The boy's 400 metres hurdles event was initially won by Sudan's Abdulagadir Idriss in a time of 50.78 seconds,[1] but this was later annulled due to Idriss failing a doping control.

[2] *   Host nation (Morocco)