Geertruida Elisabeth Middendorp (November 21, 1911, – July 13, 2007) was a member of the World War II Dutch resistance group National Organization for Helping People in Hiding (Landelijke Organisatie voor Hulp aan Onderduikers, LO). The LO made counterfeit food ration coupons; it also obtained authentic coupons from loyal Netherlands citizens in the employ of the Dutch Nazis. Other groups conducted raids and robberies to steal authentic coupons from government agencies. And some Dutch civilians gave up their own coupons to the LO during the second world war.She married Hendrik Middendorp (October 2, 1911, – July 13, 1989) in 1934.