2005 UCI Mountain Bike & Trials World Championships
The 2005 UCI Mountain Bike & Trials World Championships were held in Livigno, Italy from 31 August to 4 September 2005.
The disciplines included were cross-country, downhill, four-cross, and trials.
The event was the 16th edition of the UCI Mountain Bike World Championships and the 20th edition of the UCI Trials World Championships.