Anton Johan Wijnand (Wijnand) Duijvendak (Markelo, 30 november 1957) is a Dutch politician. He is a former member of the Tweede Kamer for the GreenLeft. Duyvendak is the eldest son of a minister from Zeist. After his high school he studied sociology at the University of Amsterdam between 1976 and 1980. He did not finish his studies and instead became involved the leftwing Amsterdam action world: he became involved in the squatting movement and the anti-militarist action group Onkruit. In 1984 he was jailed for six weeks for having broken into the Dubbeldam military complex together with other members of Onkruit. Between 1984 and 1987 he wrote for the radical magazine Bluf!. After that he became involved in the Anti-Apartheid Committee "Get Shell out of South Africa" and he was an editor at