Pieter Steyn (October 6, 1706 in Haarlem – November 5, 1772) was a Dutch government official.
He was grand pensionary of Holland from June 18, 1749 to November 5, 1772.
[1][2] Over the course of his career, he also served as an alderman, mayor, councillor, and administrative officer.
[3] He was the son of Johanna Patijn and Adriaan Steyn, mayor of Haarlem.
[2] As Grand Pensionary of Holland, Pieter Steyn was overshadowed by the Duke of Brunswick-Lüneburg, "governing guardian" of the minor stadtholder William V, Prince of Orange.