In this article, we first aim to give simple proofs of known formulae for the generalized Carlitz q-Bernoulli polynomials b m,c (x, q) in the p-adic case by means of a method provided by Kim and then to derive a complex, analytic, two-variable q-Lfunction that is a q-analog of the two-variable L-function. Using this function, we calculate the values of two-variable q-L-functions at nonpositive integers and study their properties when q tends to 1. Mathematics Subject Classification (2000): 11B68; 11S80.