The paper examines the correlations to obtain rough estimates of the shear wave velocity V_S from non-seismic dilatometer tests (DMT) and cone penetration tests (CPT). While the direct measurement of V_S is obviously preferable, these correlations may turn out useful in various circumstances. The experimental results at six international research sites suggest that the DMT predictions of V_S from the parameters I_D (material index), K_D (horizontal stress index), M_DMT (constrained modulus) are more reliable and consistent than the CPT predictions from q_c (cone resistance), presumably because of the availability, by DMT, of the stress history index K_D.