SVR technique for strength estimation of geopolymer stabilized clayey soil is presented. Experimental database of 213 soil samples stabilized with slag based geopolymer binder is used. A comparative study of different kernel function on SVR model performance is discussed. A parametric study with SVR model is conducted to evaluate the effect of input parameters on UCS. An empirical approach for strength prediction of slag based geopolymer stabilized clayey soil is proposed.