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.[3] He studied Latin with Eduard van Zurck,[3] and went on to study law in Leiden between 1724 and 1726.
Both his marriages (of 1736 and 1740) were without issue.[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.[4]