Jasper Danckaerts (7 May 1639, Vlissingen - 1702/1704, Middelburg) was the founder of a colony of Labadists along the Bohemia River in what is now the US state of Maryland. He is known for his journal, kept while traveling through the territory which had previously been part of the New Netherland. Documenting his journey in 1679-1680, it offers a description of the landscape and the lifestyle of inhabitants of the region in the late 17th century. The diary journals the travels of Danckaerts and Peter Sluyter (1645, Wesel-1722), two emissaries of Friesland pietists known as Labadists, journeying to North America to find a location for the establishment of a community.