The Campaign to Suppress Counterrevolutionaries (Chinese: 镇压反革命; pinyin: zhènyā fǎn gémìng; literally: "suppressing counterrevolutionaries" or abbreviated as Chinese: 鎮反; pinyin: zhènfǎn) was the first political campaign launched by the People's Republic of China designed to eradicate opposition elements, especially former Kuomintang (KMT) functionaries accused of trying undermine the new Communist government. It began on March 1950 when the Chinese Communist central committee issued the Directive on elimination of bandits and establishment of revolutionary new order (Chinese: 關於嚴厲鎮壓反革命分子活動的指示).
The campaign was implemented as a response to the rebellions that were commonplace in the early years of the People's Republic of China. Those targeted during the campaign in were thereafter labeled as "counterrevolutionaries", and were publicly denounced in mass trials. Significant numbers of "counterrevolutionaries" were arrested and executed and even more sentenced to "labor reform" (Chinese: 勞動改造; pinyin: láodòng gǎizào).
Professor Yang Kuisong noted the strong resistance against the Communist government during the early days of the People's Republic of China, mostly from remnants of the KMT. According to Chinese state media, after the victory of the CCP in the Chinese Civil War, remnants of the Kuomintang continued to gather intelligence, conduct sabotage, destroy transportation links, loot supplies, and entice armed rebellion through bandits and secret agents.