The Holland Land Company was an unincorporated syndicate of Dutch investors from Amsterdam, headquartered in Philadelphia, which purchased large tracts of American land for development and speculation. In operation in various iterations between 1789 and 1858, the syndicate's primary acquisition was of the western two-thirds of the Phelps and Gorham Purchase in 1792 and 1793, an area that afterward was known as the Holland Purchase. Additional lands were purchased in northwest Pennsylvania.