Harm Jan Huidekoper (April 3, 1776 – May 22, 1854) was a businessman, philanthropist, essayist and lay theologian, a vice president of the American Unitarian Association, and a founder of the Meadville Theological School.

[2][3] Huidekoper first settled in the community of Dutch expatriates in Cazenovia, New York and worked there for John Lincklaen, the Holland Land Company agent for that area.

Huidekoper then moved to nearby Barneveld, New York and in 1799 became the clerk for Adam Gerard Mappa who also worked for the Holland Land Company.

In 1802 Huidekoper transferred to Philadelphia to become the assistant to Paul Busti, Agent General for the Holland Land Company holdings in America.

The clarification of land ownership rights under Pennsylvania law was an essential early task undertaken by Huidekoper.