Electronic Journal of Differential Equations, Vol. 2009(2009), No. 10, pp. 1-11. Title: Existence and uniqueness of solutions to impulsive fractional differential equations Authors: Mouffak Benchohra (Univ. de Sidi Bel-Abbes, Algerie) Boualem Attou Slimani (Univ. de Tlemcen, Algerie) Abstract: In this article, we establish sufficient conditions for the existence of solutions for a class of initial value problem for impulsive fractional differential equations involving the Caputo fractional derivative. Submitted October 22, 2008. Published January 09, 2009. Math Subject Classifications: 26A33, 34A37. Key Words: Fractional derivative; impulses; Initial value problem; Caputo fractional integral; nonlocal conditions; existence; uniqueness; fixed point.