Luminaire and container holder

A luminaire of the embodiment includes: a light guide portion having a ring shape; a light-emitting portion having a light-emitting element and configured to irradiate the light guide portion with light; and an incident portion provided on an outer peripheral surface of the light guide portion at one end thereof and facing the light-emitting portion at the other end thereof. An angle between an axial line of the incident portion and a line passing through a center of a connecting portion between the incident portion and the light guide portion and coming into contact with an inner peripheral surface of the light guide portion exceeds 0°.