To provide an illuminating device and a display, capable of adjusting luminance of an illuminated member independently or capable of changing light-emitting colors.

The illuminating device is provided with an illuminating means consisting of a plurality of illuminating elements arranged in columns, and a light guide means guiding illuminating light emitted from the illuminating means to the illuminated members 1, 2. The light guide means includes a first light guide body 5, and a second light guide body 6 along an outer peripheral surface of the first light guide body 5. The illuminating means includes a first illuminating element 3 corresponding to the first light guide body 5 and a second illuminating element 4 corresponding to the second light guide body 6. The second illuminating element 4 emits light with different luminance or different color from the first illuminating element 3. The light guide means is provided with a coupling part 8 for coupling the first light guide body 5 and the second light guide body 6.