草双紙（くさぞうし）は、江戸時代中頃から明治初期まで江戸で出版された絵入り娯楽本、赤本・黒本・青本・黄表紙・合巻の総称である。絵草紙（えぞうし）・絵双紙（えぞうし）・絵本（えほん）とも呼んだ。江戸の大衆本・江戸地本の中心を占めた。
Kusazoushi refers collectively to illustrated entertainment books published in Edo from the mid-Edo period to the early Meiji era, including red books, black books, blue books, yellow covers, and combined volumes. They were also called e-zōshi, or ehon. They formed the core of Edo's popular books and Edo jibon.