纸板是一种纸类的通称。

多数类型的「纸板」均可回收。干净（即未被加上化学物涂层）的纸板通常值得回收，但与加工成本相比，回收后价值甚微。重用后的纸板可作工业或家居用，例如切碎后的纸板可作动物的寝室的舖垫。

Paperboard is a thick paper-based material. While there is no rigid differentiation between paper and paperboard, paperboard is generally thicker (usually over 0.25 mm, 0.010 in, or 10 points) than paper. According to ISO standards, paperboard is a paper with a grammage above 224 g/m, but there are exceptions. Paperboard can be single- or multi-ply. Paperboard can be easily cut and formed, is lightweight, and because it is strong, is used in packaging. Another end-use would be graphic printing, such as book and magazine covers or postcards. Sometimes it is referred to as cardboard, which is a generic, lay term used to refer to any heavy paper pulp–based board. Paperboard is also used in fine arts for creating sculptures.