The soursop (Spanish guanábana, Portuguese graviola, Annona muricata; syn. A. sericea Dunal in Correia, M. P., (1984), A. macrocarpa Wercklé, A. bonplandiana H.B. & K., A. cearensis Barb.Rodr., A. coriacea, Guanabanus muricatus (L.) M.Gómez in Rain-tree) is a broadleaf flowering evergreen tree native to Mexico, Central America, the Caribbean and northern South America. Today, it is also grown in some areas of Southeast Asia. It is in the same genus as the cherimoya and the same family as the pawpaw. In most Spanish speaking countries it is commonly known as Guanábana. In the Philippines, it is known as guyabano.

The soursop is adapted to areas of high humidity and relatively warm winters, temperatures below 5 °C will cause damage to leaves and small branches, and temperatures below 3 °C can be fatal.

Its flavor is described as a combination of strawberry and pineapple with sour citrus flavor notes contrasting with an underlying creamy flavor reminiscent of coconut or banana.