Experimentalfältet (Swedish: "the field for experiments") was an area in Frescati in northern Stockholm, used by the Royal Swedish Academy of Agriculture and Forestry from the early 19th Century until the 1960s, when it was replaced at the site by the new campus of Stockholm University. The former Roslagsbanan railway station Universitetet used to be called Experimentalfältet but changed its name when the university had been established there.
The activities of the Academy of Agriculture and Forestry has continued in Ultuna outside Upsala.