Joan Blaeu (; 23 September 1596 – 21 December 1673), also called Johannes Blaeu, was a Dutch cartographer and the official cartographer of the Dutch East India Company. Blaeu is most notable for his map published in 1648, which was the first map to incorporate the heliocentric theory into a map of the world and was the first map that incorporated the discoveries of Abel Tasman. Blaeu renamed what is now New Zealand as ''Nieuw Zeeland'' after the Dutch province of Zeeland; the anglicized version of the name is still in use today.
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