In a door striker attaching structure, a door striker includes a rod and a base plate, in which the base plate includes rod support portions to which the rod is connected, and a pair of fastening portions through which the base plate is fastened to a vehicle body of a utility vehicle. The vehicle body is provided with fastening holes to which the fastening portions are fastened, and each of the fastening holes is an elongated hole having two central portions. The door striker is symmetric with respect to a first center line that connects centers of the fastening portions, and by inverting the door striker along the first center line, a second center line that connects centers of the rod support portions is biased in a direction along the first center line by a distance equal to a central distance between the central portions of the fastening holes.