大觉醒运动（英语：Great Awakening），也称大觉醒复兴运动，是在美国基督教历史上出现的数次复兴运动。大觉醒运动亦被视为美国的宗教复兴，延续新教的宗教改革精神。该运动普遍认为对美国的思想、观念以至社会生活曾产生重大影响，亦确定了美国的宗教文化。乔纳森·爱德华兹是发起大觉醒运动的领导者，奠定该运动的发展。

美国历史学界普遍接受曾有四次大觉醒运动，分别是:

The term Great Awakening can refer to several periods of religious revival in American religious history. Historians and theologians identify three or four waves of increased religious enthusiasm occurring between the early 18th century and the late 19th century. Each of these "Great Awakenings" was characterized by widespread revivals led by evangelical Protestant ministers, a sharp increase of interest in religion, a profound sense of conviction and redemption on the part of those affected, an increase in evangelical church membership, and the formation of new religious movements and denominations.