Benjamin David Zablocki (January 19, 1941 – April 6, 2020) was an American professor of sociology at Rutgers University where he taught sociology of religion and social psychology.

He published widely on the subject of charismatic religious movements, cults, and brainwashing.

[2][3][4] Zablocki defined a cult as “an ideological organization held together by charismatic relationships and demanding total commitment”[5] and advocated what he termed “the brainwashing hypothesis.”[6] Other scholars, Zablocki noted, commonly mistake brainwashing for both a recruiting and a retaining process, when it is merely the latter.

[7] For evidence of the existence of brainwashing, Zablocki referred to the sheer number of testimonies from ex-members and even ex-leaders of cults.

[8] Zablocki further alleged that brainwashing has been unfairly "blacklisted" from the academic journals of sociology of religion, and such blacklisters receive funding from alleged cults and engage in corrupt practices.