A planetary gear train may include input and output shafts, first to fifth planetary gear set, respectively having first to third, fourth to sixth, seventh to ninth, tenth to twelfth, and thirteenth to fifteenth elements, a first shaft fixedly connected to the second element and the input shaft, a second shaft fixedly connected to the fourteenth element and the output shaft, a third shaft fixedly connected to the third and fourth elements, a fourth shaft fixedly connected to the eighth element and the thirteenth element, a fifth shaft fixedly connected to the ninth element, a sixth shaft fixedly connected to the eleventh and fifteenth elements, a seventh shaft fixedly connected to the first and fifth elements, an eighth shaft fixedly connected to the sixth, seventh, and tenth elements, and a ninth shaft fixedly connected to the twelfth element.