According to the invention, there is provided a novel soybean variety designated XB28N08. This invention thus relates to the seeds of soybean variety XB28N08, to the plants of soybean XB28N08 to plant parts of soybean variety XB28N08 and to methods for producing a soybean plant produced by crossing plants of the soybean variety XB28N08 with another soybean plant, using XB28N08 as either the male or the female parent.