Moominvalley (Swedish: Mumindalen, Finnish: Muumilaakso) is a fictional place, where the Moomins live in the tales by Finnish author Tove Jansson.
Especially in the early books Moominvally is depicted as a beautiful place with green slopes, rivers, fruit trees, flowers and a place for calm and peaceful life as in the tradition of pastoral poetry, and yet it is still threatened by natural forces such as flooding and vulcanoes. Moominvally has its counterpart in an other world
In Moominpappa at Sea Moominvalley is depicted as a place of boredom
Moominvalley is also another name for the Moomin Museum in Tampere, Finland.