Krupuk encompasses a vast group of Asian crackers that are typically made with starch and additional ingredients, which are used as flavorings. These crispy crackers are a staple in Asia, but they are strongly associated with Indonesia, which boasts with the largest number of varieties.

In Malaysia, they are known as keropok and in the Philippines as kropek. The most common types consist of seafood, and the most popular version is krupuk udang—internationally known as prawn crackers. Most krupuk are served as a topping or an accompaniment to various dishes, but they are also enjoyed as a quick, convenient snack.

They are available in pre-packed versions and are often sold by street vendors. Due to historical relations, these crackers are also found in the Netherlands where they are known as kroepoek.