To provide a luminaire for a study desk attached to a desk shelf arranged on a top board of the study desk, which is not dazzling even if a user is a short schoolboy below low grade and can illuminate the top board of the desk while keeping sufficient illuminance.

In the luminaire attached to a desk shelf 3 arranged on a top board 8 of a study desk 2, a space having a reflection board 24 at its upper portion and opened at its lower portion is formed at a front end portion of a supporting member 4 supported by the desk shelf, a light source 5 is fixed to the reflection board in the space, and a louver 6 having a plurality of translucence or opaque rib 17 directed toward front diagonal lower part and extending in the lateral direction is provided at a position more front than that of the light source.