John Luxmoore or Luxmore (1766–1830) was an English bishop of three sees.
The son of John Luxmoore of Okehampton, Devon, he was born there. He was educated at Ottery St. Mary school and at Eton College, going as scholar in 1775 to King's College, Cambridge. He graduated B.A. in 1780, and proceeded M.A. in 1783.
On 30 June 1795 he was created D.D. at Lambeth by Archbishop John Moore. He became fellow of his college, and having been tutor to the Earl of Dalkeith, he obtained preferment. He was made rector of St. George's, Bloomsbury, in 1782, prebendary of Canterbury in 1703, dean of Gloucester in 1799, and rector of Taynton in 1800. In 1806 he exchanged St. George's, Bloomsbury, for St. Andrew's, Holborn. In 1807 he became bishop of Bristol, in 1808 he was translated as bishop of Hereford, and in 1815 to bishop of St Asaph. In 1808 he resigned the deanery of Gloucester, and in 1816 the benefice of St. Andrew's, Holborn. Luxmoore held, as was usual, the archdeaconry of St Asaph at the same time as the bishopric, and had other preferments. He died at the palace, St Asaph, on 31 January 1830. He published a few charges and sermons.