A vehicle luminaire according to an embodiment includes: a flange; a mount portion provided on one side of the flange; a light-emitting unit that is provided on an end of the mount portion opposite to the flange side and includes at least one light-emitting element; a holder which is provided on another side of the flange and into which a connector is insertable; and at least one first thermal radiation fin that is provided on the another side of the flange and extends from a peripheral edge of the flange toward the holder. In a direction in which the holder projects from the flange, the position of an end face of the holder opposite to the flange side is different from the position of a holder-side end of an end face of the first thermal radiation fin opposite to the flange side.