Mamuang kuan (, ), also referred to as preserved mango or mango leather, is a traditional Thai sweet. It is a preparation of dried mango in fruit leather form.
Mamuang kuan is slender and delicate, offering a chewy and soft texture, and golden color. It tastes sweet-and-sour. People sometimes prepare it as a circle, flower, or spiral. It is prepared by slow-cooking mango with sugar and salt, and optionally coconut milk. Traditionally, the mango is then sun-dried for multiple days, but this may be accelerated with a conventional oven. Farmers often make mamuang kuan from fallen mangoes that would otherwise not make it to the market.