Abstract
This chapter is devoted to the study of sequential fractional q-integro-difference equations with perturbed fractional q-difference anti-periodic boundary conditions. Existence results for the given problem are established by applying Krasnoselskii's fixed point theorem, Leray-Schauder nonlinear alternative for single valued maps and Banach's contraction mapping principle. Correction terms arising due to the perturbation in the anti-periodic boundary data are highlighted. An illustrative example is also presented.