Viljo Vellonen (March 24, 1920 - February 5, 1995) was a Finnish cross-country skier. He won a silver medal in the 4 × 10 km relay at the 1950 FIS Nordic World Ski Championships in Lake Placid, New York.
Vellonen also finished sixth in the 18 km event at those same championships.
All results are sourced from the International Ski Federation (FIS).[1]