A method of fabricating a resistance variable device includes forming selection devices on a substrate, forming a conductive layer on the selection devices, patterning the conductive layer in a first direction to form conductive patterns spaced apart from each other in the first direction and connecting a pair of adjacent selection devices to each other in the first direction, forming a resistance-variable-material-layer on the conductive patterns, and patterning the resistance-variable-material-layer and the conductive patterns in a second direction to form rows of resistance-variable material extending in the second direction and to form electrodes spaced apart from one another, such that each electrode corresponds to a separate selection device.