The First Great Rectification Movement refers to a 1965 ideological movement by Filipino communists led by Jose Maria Sison wherein they "criticized, repudiated and rectified the major ideological, political and organizational errors and weaknesses" of the 1930s-era Communist Party of the Philippines.
第一次大整风运动（英语：First Great Rectification Movement，缩写为FGRM）是指由何塞·马利亚·西松领导的菲律宾共产主义者在1966年发起的意识形态运动，他们“批判、驳斥和纠正”了旧菲律宾共产党“思想、政治和组织的主要的错误和弱点”。