Testing Newtonian dynamics with globular clusters Globular clusters contains, if any, negligible amounts of dark matter. For this reason, they are the ideal tool for testing Newtonian dynamics down to the accelerations typically observed in galaxies. In particular, their dynamics at large distances from their center can effectively constrain the gravitational potential below the MOND critical acceleration a0. I will review the result obtained so far on this subject, results that clearly favor the possibility -- as indeed suggested within the successful MOND hypothesis -- that Newtonian dynamics might not be valid below a0 and, consequently, that dark matter might not exists at all.