According to the invention, there is provided a novel soybean variety designated XB18J07. This invention thus relates to the seeds of soybean variety XB18J07, to the plants of soybean XB18J07 to plant parts of soybean variety XB18J07 and to methods for producing a soybean plant produced by crossing plants of the soybean variety XB18J07 with another soybean plant, using XB18J07 as either the male or the female parent.