New Upsala (Swedish: Nya Uppsala) also referred to as the Pine Lake Settlement, was an early pioneer Swedish-American community in Wisconsin. The short-lived settlement of Swedish immigrants was founded by Gustaf Unonius. It was located in the north central section of Waukesha County, Wisconsin, near the town of Merton, outside Delafield, in the area now incorporated as the villages of Chenequa and Nashotah.
Gustaf Unonius, an immigrant from Sweden, had a dream to establish a Swedish cultural and intellectual center on the frontier. He staked a claim on the east shore of Pine Lake (43°07′01″N 88°23′02″W / 43.117°N 88.384°W), naming it New Upsala after the historic Swedish university city of Uppsala. By 1842, he and several associates had begun building the new settlement called Nya Uppsala. By 1848, several families had relocated to the community and a log cabin had been completed to house the Scandinavian parish at Pine Lake.
Shortly thereafter Unonius relocated to Manitowoc County, Wisconsin, where he became an Episcopalian priest. Much of the community subsequently disbanded. He had attracted an assortment of nobles, theologians, merchants, teachers and military officers. The choice of land was not a practical location for a settlement. The lake shore was stony and the soil unproductive. The colony failed almost as soon as it was started.