A fence rail mounting clip for connecting a hollow fence rail to a vertical post. The mounting clip includes a base that is selectively interlockable with a bracket. The bracket has a front surface with a peripheral wall extending normal to and outwardly therefrom to define a fence rail receptacle for receiving an end of the rail therein. A rail support extends normal to and outwardly from the front surface of the bracket from a position within the rail receptacle. The rail support is separated from the peripheral wall by a gap. The rail support terminates in an outermost edge which lies further from the front surface of the bracket than does the outermost edge of the peripheral wall. When the rail is received in the rail receptacle, the walls of the rail are received within the gap between the rail support and peripheral wall and are wedged therebetween, and the rail support extends into the bore of the hollow rail.