An elastic conductor (1) is configured to be changeable between a first state and a second state in which the elastic conductor (1) is expanded in the first direction from the first state. The elastic conductor (1) includes: a stretchable base member (10); and a plurality of conductive members (20a to 20m) each having a longitudinal shape and arranged on a surface of the stretchable base member (10), each of the plurality of conductive members (20a to 20m) being lower in specific resistance and higher in modulus of elasticity than the stretchable base member (10). In the first state, the plurality of conductive members (20a to 20m) are arranged to be spaced apart from each other in the second direction perpendicular to the first direction, and to be continuous in a section extending in the first direction as seen in the second direction from one end of the section to the other end of the section, in which a distance between the conductive members (20a to 20m) adjacent to each other in the second direction in the second state is shorter than a distance between the conductive members (20a to 20m) adjacent to each other in the second direction in the first state.