Abstract. In this paper we introduce r parameter Srivastava polynomials in r variable by inserting new indices. These polynomials include the Lagrange polynomials in several variables, which are also known as Chan-Chyan-Srivastava polynomials (W.-C.C. Chan, C.-J. Chyan and H.M. Srivastava, The Lagrange polynomials in several variables, Integral Transforms and Special Functions, 12 (2001) 139-148). We prove several two sided linear generating relations between r variable and .r 1/ variable Chan-Chyan-Srivastava polynomials. Some special cases of the main results are also presented.2010 Mathematics Subject Classification: 33C45