Hendrik Laanstra
- Born: 21 Mar 1837, Kollumerland Friesland Netherlands
- Marriage: Lyske Dictus van der Bij 18 May 1878, Tietjerksteradeel Friesland Netherlands
- Died: 2 Sep 1879, Tietjerksteradeel Friesland Netherlands at age 42
 Another name for Hendrik was Hendrik Krozenbrink.
Hendrik married Lyske Dictus van der Bij, daughter of Benedictus Jans van der Bij and Janke Alberts Spoelstra, on 18 May 1878 in Tietjerksteradeel Friesland Netherlands. (Lyske Dictus van der Bij was born on 4 Sep 1838 in Achtkarspelen Friesland Netherlands and died on 1 Feb 1924 in Achtkarspelen Friesland Netherlands.)
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