A portable jump training apparatus designed for portability that permits an athlete to safely measure their vertical leap in any number of venues where a jump training apparatus might be utilized is provided. The portable jump training apparatus may include a jump measurement device, a height adjustment post, and an external surface mount. The height adjustment post may be joined to the jump measurement device such that they are positionally fixed with respect to one another. The external surface mount may include at least one adjustable gripping device to releasably secure the external surface mount to an external mounting surface. Also, the external surface mount may include a translation guide configured for translational cooperation with the height adjustment post such that the position of the jump measurement device may be adjusted with respect to the stationary external surface mount.