Advances in surgical and immunosuppressive techniques as well as increased public awareness have made organ transplantation a well-accepted therapy. To meet the increased need for transplantable organs, medical staff need to recognize which dying patients may be suitable organ donors and how to optimally maintain that donor. We present an overview of the absolute and relative contraindications to organ donation as well as a review of the problems that may be encountered when managing organ donors and how they can best be solved. These guidelines will help increase the number of suitable organ donors and optimize the condition of the transplanted organs.