John Proby (c. 1698-15 March 1762), was a British Member of Parliament.
Proby was the son of William Proby, Governor of Fort St George, Madras, and his wife Henrietta, daughter of Robert Cornewall. He was elected to the House of Commons for Huntingdonshire in 1722, a seat he held until 1727, and later represented Stamford from 1734 to 1747. He married the Hon. Jane, daughter of John Leveson-Gower, 1st Baron Gower, in 1719. One of their sons, the Very Reverend Baptist Proby (d. 1807), became Dean of Lichfield. Another son, John, succeeded him as Member of Parliament for Stamford and was elevated to the peerage as Baron Carysfort. Jane Proby died in 1726. Proby survived her by over thirty-five years and died in March 1762.