Whistler RCMP Sgt. Steve LeClair said the accident happened just before 2:30 p.m. in the Nordic subdivision, between Whistler Village and Creekside.
The logging truck was travelling southbound when it overturned at a bend in the road. A northbound motorcyclist was in the path of the logs as they spilled off the truck and onto the roadway. The motorcycle rider was pronounced dead at Whistler Health Care Centre.
The driver of the logging truck was taken to hospital with undetermined injuries.
The logging truck also struck a northbound vehicle, whose occupants were taken Whistler Health Care Centre "as a precautionary measure," LeClair said.
"Highway 99 is currently closed in both directions and will be for quite some time as the scene is examined by investigators. Traffic is being routed through a nearby subdivision," he said.