According to the invention, there is provided a novel soybean variety designated XB38W09. This invention thus relates to the seeds of soybean variety XB38W09, to the plants of soybean XB38W09 to plant parts of soybean variety XB38W09 and to methods for producing a soybean plant produced by crossing plants of the soybean variety XB38W09 with another soybean plant, using XB38W09 as either the male or the female parent.