The FIS Nordic World Ski Championships 1991 took place between 7 and 17 February 1991 in Val di Fiemme, Italy. The women's 5 km was reintroduced after not being held in the previous championships.
The FIS Nordic World Ski Championships of 1991 were held in Val di Fiemme, Italy, from February 7th to 17th. Notably, the women's 5 km event returned after a break from the previous championships.