This　paper　assesses　the　dynamic　nonlinear　free-field　soil　response　under　bidirectional　horizontal　non-uniform　excitation　through　a　series　of　multi-point　1　g　shaking　table　tests.　The　soil　bed　was　enclosed　in　an　innovative　soil　box　supported　by　an　array　of　three　shake　tables　and　was　subjected　to　uniform　and　non-uniform　ground　motions　in　one　and　two　horizontal　directions.　The　soil　response　to　bidirectional　and　unidirectional　excitations,　both　uniform　and　non-uniform,　were　compared　and　discussed　in　terms　of　acceleration　time　history　and　Fourier　spectra,　acceleration　amplification　factor　and　soil　settlement,　as　well　as　shear　stress-shear　strain　behavior.　The　comparison　of　soil　responses　to　bidirectional　and　unidirectional　shakings　demonstrated　that　the　trends　of　peak　acceleration　amplification　factors　are　similar　along　soil　depth,　but　the　response　difference　between　bidirectional　and　unidirectional　shaking　is　increasingly　higher　along　the　soil　profile　towards　the　ground　surface,　especially　for　uniform　excitation.　The　variations　of　soil　settlement,　shear　stress-strain　and　damping　curves　under　bidirectional　excitation　were　similar　to　that　under　longitudinal　excitation;　however,　they　were　much　different　than　those　observed　under　transverse　excitation.　The　soil　damping　in　Y-direction　under　non-uniform　excitation　was　larger　than　that　under　uniform　excitation.　These　different　site　response　characteristics　under　bidirectional　non-uniform　excitation　should　be　properly　considered　in　the　seismic　design　of　extended　infrastructure.