Vidar Benjaminsen is a Norwegian ski-orienteering competitor and world champion. He has received four gold medals, four silver medals and seven bronze medals at the World Ski Orienteering Championships, from 1986 to 1996. He has won the overall World Cup in Ski Orienteering.
After retiring from elite ski-orienteering, he has been an active organizer of events as well as promoter of the sports of orienteering and ski-orienteering. In 2004, he was awarded a prize for his voluntary efforts by Oslo's regional sports administration.
His club is Lillomarka Orienteering Team. He has been an active member since its formation in 1985.
He is married to Anne Benjaminsen.