A King's commissioner (Dutch: Commissaris van de Koning, CvdK) is the head of government and legislature in a province of the Netherlands. When the reigning monarch is a woman, the title is Queen's commissioner (Commissaris van de Koningin).
A commissioner is appointed by the Dutch Crown as its official representative, and serves as the non-voting chair of the provincial legislature, the States-Provincial. He or she also serves as chair and full and voting member of the Provincial executive.