thumb|Ion Cristoiu in 2016
Ion Cristoiu (; born 16 November 1948, Găgești, Vrancea County) is a conservative Romanian journalist, writer, and political analyst.
Career
He was editor-in-chief of the daily Evenimentul Zilei during its heyday in the 1990s, when the average daily circulation topped 600,000, making it the most read newspaper in Romania, after România liberă (circulation 1 million) and one of the most read in Eastern Europe as well. He also founded or played a major role at a number of the weekly publications during that era: Expres, Expres Magazin, and Zig-Zag. All these publications were highly critical of president Ion Iliescu. Cristoiu is not on that list, so he doesn't have an index number as a collaborator.
, a Romanian historian and researcher, gave an interview to the Newsweek Romania magazine in 2018, in which he spoke about the fact that the journalist is mentioned in documents from the archives of the former Securitate, as the "Coroiu" source. The documents were never made public.