Electronic Journal of Differential Equations, Vol. 2013 (2013), No. 25, pp. 1-13. Title: Fractional differential equations with fractional non-separated boundary conditions Authors: Xiaoyou Liu (Guangxi Univ. for Nationalities, Nanning, China) Yiliang Liu (Guangxi Univ. for Nationalities, Nanning, China) Abstract: We study boundary-value problems of nonlinear fractional differential equations with fractional non-separated (integral) boundary conditions. Existence and uniqueness results are obtained by using fixed point theorems and examples are given to illustrate the results. Submitted September 28, 2012. Published January 27, 2013. Math Subject Classifications: 34A08, 34B15, 34B10. Key Words: Fractional differential equation; non-separated boundary condition; integral boundary condition, existence of solutions.