To provide a windbreak cover for a lantern easily detachably attached, even if the dimension of the opening part of the lantern has wide variations, surely preventing the entering of wind and rain, and enabling the elderly to surely and easily install a candle in the lantern.

This windbreak cover 10 for the lantern is provided with a cover part 14, an opening/closing door 12 formed approximately same to or a little larger than a cover opening part 14c formed in the center of the cover part 14 and having one side part openably/closably formed in the edge part of the cover opening part of the cover part 14 via a turning part 13, an elastic lock part 15 having its one end side fixed to the upper or a lower side part in the inside of the cover part 14, a cover fixing part 16 having its one end side fixed to the other side of the cover part 14 opposed to the elastic lock part 15, and a guide part 20 formed in the lower surface of the cover fixing part 16.