Blind box toys, also known as mystery blind box or surprise box, are a type of collectible toy that is sold in a sealed box (or blind bag) without revealing the contents. The contents of the box are usually a mystery until the box is opened, hence the name "blind box". Blind box toys have become increasingly popular in recent years, particularly in the world of designer toys.

Blind box toys can come in many different forms, from vinyl figures to plush toys to miniature figurines. They are often sold in limited edition sets, with certain figures being rarer or more difficult to obtain than others. Some blind box series have themes, such as characters from a particular movie or video game franchise.

Collectors often trade or sell blind box toys, and some even create online communities dedicated to trading and selling these toys. Blind box toys have also become popular among children, who enjoy the element of surprise and the thrill of collecting a full set.