A novel soybean cultivar, designated 915034, is disclosed. The invention relates to the seeds of soybean cultivar 915034, to the plants of soybean 915034 and to methods for producing a soybean plant produced by crossing the cultivar 915034 with itself or another soybean variety. The invention further relates to hybrid soybean seeds and plants produced by crossing the cultivar 915034 with another soybean cultivar.