The study examined the influence of mass media campaigns on the menace of corruption in Nigeria with Nigeria Union of Journalists, Chapel Osogbo as a case study. Without doubt mass media play a very crucial role as the fourth estate of the realm especially in serving as the major watchdog to the people in authority. Mass media especially television has been able to educate, enlighten and inform the general public on the effect of corruption on our national development while mass media have not relented in exposing corrupt leaders, it always pattern with various anti graft agencies such as the EFCC, ICPC and the Nigerian Police to build a corrupt free nation. However, the research is divided into five chapters. The research used survey research method in carrying out this research with the use of questionnaire as a research instrument. The data collected were analysed using descriptive statistics (frequency percentage and tables). The study find out that media have been a major instrument in waging war against corruption and corrupt practices in Nigeria. The media are performing significant roles in the anti corruption campaign and NTA is not left out of this campaign. It is recommended that Economics and Financial Crime Commission (EFCC) and other ani-graft agencies should act within the law that establish them while the broadcasting media and newspapers outfits should be objective in their coverage and reportage of corrupt matters without political or ethnic influence.