Gerardus Jozef Dusseldorp (2 December 1918 22 April 2000) was a Dutch water engineer and the founder of Civil & Civic, the financing arm of which later emerged as Lendlease, one of Australia's largest companies.
Born in Utrecht in the Netherlands in December 1918, Gerardus Dusseldorp was known as Dik as a child, the anglicised version of which stuck with him for the rest of his life. At the age of 15, he enrolled as a marine cadet, with the aim of becoming a captain in the merchant marine. He was found to be color blind when he sought entry into officer training and withdrew from the service. During World War II, as a Dutchman of working age, he was deported to Berlin, to work as forced labor. Returning to the Netherlands, he secured work with a Danish firm building a railway from Copenhagen to Hamburg. In late 1943 he was transported to Kraków, again as forced labor but this time for the Siemens Organisation.