The incident occurred on the B9102 near the Dandaleith junction, north of Craigellachie at 9.25am.
Ambulance and police attended the scene where the cyclist was found fatally injured. The driver of the vehicle involved was unhurt.
Meanwhile, a woman has been taken to hospital following another incident that trapped four people in a car. Emergency services were called to Temple of Fiddes on the A90, five miles south of Stonehaven, at 2.40pm, where they found a Seat Ibiza with four people trapped inside.
One woman was taken to Aberdeen Royal Infirmary after being freed.
Anyone with information about either of these incidents has been asked to contact police by calling 101.