Bernard Zylstra (born Zijlstra; 1934–1986) was the principal and the professor of political theory at the Institute for Christian Studies in Toronto, Ontario, Canada.
His influence on the development of Christian scholarship extended to the US, UK, South Africa, and Australia.
His brother was Uko Zylstra, the professor of biology at Calvin College in Grand Rapids, Michigan.
Zylstra's dissertation was on the political theory of Harold Laski.
Later, Zylstra would publish the related From Pluralism to Collectivism: The Development of Harold Laski's Political Thought in 1968.