Soil compaction is one of the most frequent and important activities in infrastructure construction, a multi-billion dollars industry. Huge amounts of testing and time are devoted to soil compaction quality control in any engineering project of significant size. In this article, we aim to show the potential of using small-strain shear wave velocity, V_s, as an indicator of soil compaction. A compilation of experimental data found in the literature suggests such correlation. Direct knowledge of the shear wave velocity allows a more fundamental interpretation of the deformation characteristics of geomaterials through soil shear modulus. This may set the bases for the development of new in-situ compaction estimation technologies that could have a very significant impact on industry and the practice of civil engineering today.