Willoch is a surname. Notable people with the surname include:
* Kåre Willoch (born 1928), Norwegian politician
* Odd Isaachsen Willoch (1885–1940), Norwegian naval officer
* Herman Willoch, Norwegian painter
* Erik Willoch, Norwegian jurist
*
Sigurd Willoch
Sigurd Daniel Isaachsen Willoch (16 May 1903 - 20 March 1991) was a Norwegian art historian and director of the National Gallery of Norway.
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