According to the invention, there is provided a novel soybean variety designated XB27N08. This invention thus relates to the seeds of soybean variety XB27N08, to the plants of soybean XB27N08 to plant parts of soybean variety XB27N08 and to methods for producing a soybean plant produced by crossing plants of the soybean variety XB27N08 with another soybean plant, using XB27N08 as either the male or the female parent.