According to the invention, there is provided a novel soybean variety designated XB28F05. This invention thus relates to the seeds of soybean variety XB28F05, to the plants of soybean XB28F05 to plant parts of soybean variety XB28F05 and to methods for producing a soybean plant produced by crossing plants of the soybean variety XB28F05 with another soybean plant, using XB28F05 as either the male or the female parent.