According to the invention, there is provided a novel soybean variety designated XB35S07. This invention thus relates to the seeds of soybean variety XB35S07, to the plants of soybean XB35S07 to plant parts of soybean variety XB35S07 and to methods for producing a soybean plant produced by crossing plants of the soybean variety XB35S07 with another soybean plant, using XB35S07 as either the male or the female parent.