Abstract: According to the present invention, a cap having a foldable visor is provided, the cap comprising a visor core and cloth fixed to a upper surface and a lower surface of the visor core, the visor located in a wearer's forehead portion when the wearer wears the cap, wherein said visor core is divided into a plurality of pieces and is foldable about the dividing portions of the visor core, and wherein each cloth with sizes of said divided pieces of said visor core is fixed to one surfaces of the upper and lower surfaces of said divided pieces of said visor core, and a cloth with a total size of said divided pieces of said visor core in a state that said divided pieces of said visor core are adjacent to each other is fixed to the other surfaces of the upper and lower surfaces of said divided pieces of said visor core, so that a gap is formed between said divided pieces of said visor core and said cloth with a total size of said divided pieces of said visor core.