Emma Mathilda Nilsson was a Swedish figure associated with the spiritualist movement based in Stockholm during the late 19th century. Her historical profile is primarily defined by her participation in these esoteric circles, which were active in Sweden during that period.

While historical records identify her as a spiritualist, she is not documented as a professional visual artist in the context of contemporary art history. Her legacy remains tied to the cultural and spiritual history of Stockholm rather than the development of modern art movements.

There is no current recognition of Nilsson within the contemporary art market or recent institutional exhibition programming. Any recent coverage of Swedish spiritualism in art, such as that concerning Hilma af Klint, does not involve Nilsson as a practitioner or subject of study.