Cornelis Johannes van Doorn (コルネリス・ヨハネス・ファン・ドールン, 5 January 1837 – 24 February 1906) was a Dutch civil engineer and foreign advisor to Meiji period Japan.

Van Doorn studied at the Technical School of Dr. Grothe in Utrecht and then at the Royal Academy in Delft.

In his early career, he went to Java in the Dutch East Indies, returning home in 1863 to work for the Maatschappij tot Exploitatie van Staatsspoorwegen railway company in North Holland.

In 1871 Van Doorn was invited by the Japanese government to act as an expert in hydraulic engineering, arriving in Japan on 24 March 1872, and staying to 22 July 1880.

[1][2] He designed Japan's first western-style waterway, the Asaka Canal, which reclaimed land for 52 kilometers around Lake Inawashiro in Fukushima Prefecture and made the development of the city of Kōriyama possible.