Witsen is a Dutch surname and may refer to:
*Members of the
Witsen family:
**
Cornelis Jan Witsen
**
Nicolaes Witsen
Nicolaes Witsen (8 May 1641 – 10 August 1717; modern Dutch: ''Nicolaas Witsen'') was a Dutch statesman who was mayor of Amsterdam thirteen times, between 1682 and 1706. In 1693 he became administrator of the Dutch East India Company (VOC). I ...
**
Willem Witsen
*
10653 Witsen
1 (one, unit, unity) is a number representing a single or the only entity. 1 is also a numerical digit and represents a single unit (measurement), unit of counting or measurement. For example, a line segment of ''unit length'' is a line segment ...
, asteroid
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