The aims of this study are to evaluate test-retest ant inter-rater reliability of the software Kinovea® to obtain the spatiotemporal gait parameters, as well as to study the criterion validity with respect to a three-dimensional motion capture system. The results obtained are statically significant (p < 0.05) in all the parameters studied. The test-retest reliability shows an excellent correlation in the parameters of step length, stride length, step time and stride time (ICC > 0.90), and good in speed (ICC = 0.76-0.90). The inter-rater evaluation is excellent (ICC > 0.90) in all the spatiotemporal parameters studied in both raters. The criterion validity between Kinovea® and VICON Motion System® is excellent for the parameters studied (r > 0.80) in both raters. These findings support the use of Kinovea® as an accessible and easy-to-use tool with which to obtain objective gait data.