Jan Mastenbroek

Johannes Christoffel Jan Mastenbroek (5 July 1902 – 23 May 1978) was a Dutch football manager who coached the Dutch East Indies national team at the 1938 FIFA World Cup.

Mastenbroek was born and raised in Dordrecht, son of Klaas Mastenbroek, a tailor, and Goverdina Rackwitsz. In 1924, he married Johanna van den Bovenkamp in Hengelo, at which time he was a schoolteacher.

He was the chairman of the Nederlandsch-Indische Voetbal Unie (Dutch East Indies Football Union) and the vice-president of the Dutch East Indies Olympic Committee.