Jacob Bailey (16 April 1731 – 26 July 1808) was an author and clergyman of the Church of England, active in New England and Nova Scotia.
Bailey was born in Rowley, Massachusetts, and was educated at Harvard College, ranked at the bottom (by social order) of the class of 1755, which notably also included John Adams. He started his career in the ministry as a Congregational preacher in New Hampshire but converted and became an Anglican clergyman in 1760, through his connection with Dr. Silvester Gardiner, a prominent Massachusetts physician, businessman, and landowner. Gardiner, also Anglican, sought a minister to serve the rural parish of Frankfort or Pownalborough (now Dresden, Maine, but then part of Massachusetts), which was part of the lands his business partnership, the Kennebec Proprietors, oversaw. Bailey's congregation was a mix of mainly German Lutheran and French Huguenot immigrants, who were often at odds on matters of religion with the area's Yankee Congregationalists.
Despite continuing friction with the local Congregationalists, Bailey was able to build a church and parsonage in 1770-71. Hostilities towards Bailey continued, especially when he continued to profess Loyalty to the British Crown, and he moved with his family to Nova Scotia in 1779, after American Patriots twice made attempts on his life. He served in the parish of Cornwallis for a period and then moved to Annapolis Royal where he remained for the rest of his life.
In 1780, Rev. Bailey was appointed the Deputy Chaplain to the 84th Regiment.