John Kettlewell (1653–1695) was an English clergyman, nonjuror, and devotional writer who was active during the late seventeenth century. He is chiefly remembered for his intellectual and theological opposition to the political transitions of his era, particularly the Glorious Revolution of 1688–1689. As a nonjuror, Kettlewell took a principled stand against the shifting allegiances of the period, defending his views through rigorous spiritual arguments.\n\nKettlewell is especially famous for his debates with William Sherlock, who had published The Case of the Allegiance to justify his own switch of sides and the change of the monarch. Kettlewell's reply to Sherlock was widely recognized for its spiritual depth, presenting a case that resonated even with conformist Anglicans because of its devout nature, contrasting sharply with Sherlock's more secular, aspiritual reasoning.\n\nIn addition to his specific disputes with Sherlock, Kettlewell was a vocal critic of the broader intellectual defenses of the Glorious Revolution. He targeted contractarian political theories, arguing against the fallacious notions of social contracts used to justify the overthrow and replacement of the monarch. Through his writings, Kettlewell established himself as a key defender of traditional spiritual allegiance during a time of profound national transition.