Joannes Jacobus Haarselhorst
- Born: 27 Sep 1807, Obdam, , Noord-Holland, Netherlands
- Marriage (1): Henriette Wilhelmina Hillegonda Hartsinck on 30 Oct 1831 in Obdam, , Noord-Holland, Netherlands
- Died: 7 Dec 1874, Obdam, , Noord-Holland, Netherlands at age 67
 Noted events in his life were:
• Occupation: Wijnkoper, notaris, grondeigenaar.
Joannes married Henriette Wilhelmina Hillegonda Hartsinck, daughter of Andies Hartsinck and Guurtje Jongerling, on 30 Oct 1831 in Obdam, , Noord-Holland, Netherlands. (Henriette Wilhelmina Hillegonda Hartsinck was born on 21 Aug 1811 in Schagen, , Noord-Holland, Netherlands and died on 1 Oct 1892 in Maastricht, , Limburg, Netherlands.)
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