并苯（acenes，polyacenes）是一类有机化合物，为若干个苯环在对边稠合的多环芳香烃。大分子量的并苯具有潜在的光电性质，在化学和电子工程领域得到研究。例如，并五苯被应用于有机场效应晶体管，因其载流子迁移率高达5 cm/(V·s)。

按苯环数目排序，该类化合物的前七个列于下表：

并六苯与并七苯化学性质活泼，尚未分离出纯品。不过实验上已得到纯化的双(三烷基硅乙炔基)取代的并六苯和并七苯。

The acenes or polyacenes are a class of organic compounds and polycyclic aromatic hydrocarbons made up of linearly fused benzene rings. The larger representatives have potential interest in optoelectronic applications and are actively researched in chemistry and electrical engineering. Pentacene has been incorporated into organic field-effect transistors, reaching charge carrier mobilities as high as 5 cm/Vs.