The invention relates to a lighting device (1) for a motor vehicle headlight, wherein the lighting device (1) has at least one reflector (10, 11, 12, 13), and assigned to the at least one reflector (10, 11, 12, 13) is at least one light source (20, 21, 22, 23), and light from the at least one light source (20, 21, 22, 23) is radiated into a region in front of the lighting device (1) by means of the reflector (10, 11, 12, 13) in order to form a light distribution or a part of a light distribution. The lighting device (1) has at least one, preferably exactly one reflector support (30), and the at least one reflector (10, 11, 12, 13) is fixedly attached to the at least one reflector support (30), and the at least one light source (20, 21, 22, 23) is arranged on at least one light source support (40, 41, 42, 43), and the at least one light source support (40, 41, 42, 43) is movably mounted on the reflector support (30) and can be fixed in a defined position relative to the reflector support (30).