Rayadillo (transl. striped material) is a blue-and-white striped cotton or flannel material that was used to make the military uniforms worn by Spanish colonial soldiers from the later 19th century until the early 20th century. It was commonly worn by soldiers posted in overseas Spanish tropical colonies, Spanish Morocco and Spanish Guinea, before being adopted as a summer uniform by units stationed in Spain itself.
The Revolutionary Army of the First Philippine Republic under Emilio Aguinaldo also employed the same fabric in their military uniforms during the later years of the Philippine Revolution and the Philippine–American War.