According to the invention, there is provided a novel soybean variety designated XB38Y09. This invention thus relates to the seeds of soybean variety XB38Y09, to the plants of soybean XB38Y09 to plant parts of soybean variety XB38Y09 and to methods for producing a soybean plant produced by crossing plants of the soybean variety XB38Y09 with another soybean plant, using XB38Y09 as either the male or the female parent.