Heinrich Wilhelm Ludolf (20 December 1655 – 25 January 1712) was a German Pietist, secretary to Prince George of Denmark, and ecumenical traveller.
A friend of August Hermann Francke, he travelled to Russia in the 1690s.
[2] He had persuaded Francke that the territories related to the Eastern Orthodox Church were important for the future.
[3] Gottfried Leibniz saw the importance of Ludolf's efforts on an even larger scale, bridging the gap to China.
[4] Ludolf was also one of the founders of the Society for Promoting Christian Knowledge in London, and with Anton Wilhelm Böhme linked it to Francke's organisations in Halle.