According to the invention, there is provided a novel soybean variety designated XB26L08. This invention thus relates to the seeds of soybean variety XB26L08, to the plants of soybean XB26L08 to plant parts of soybean variety XB26L08 and to methods for producing a soybean plant produced by crossing plants of the soybean variety XB26L08 with another soybean plant, using XB26L08 as either the male or the female parent.