John Bridges (1666–1724) was an English lawyer, antiquarian and topographer.
Bridges was born at Barton Seagrave, Northamptonshire, where his father then resided. His grandfather was Colonel John Bridges of Alcester, Warwickshire, whose eldest son of the same name purchased the manor of Barton Seagrave about 1665, and as an improving landowner introduced the cultivation of sainfoin. His mother was Elizabeth, sister of Sir William Trumball, secretary of state. His brother was the painter and missionary Charles Bridges. He was bred to the law, became a bencher of Lincoln's Inn, was appointed solicitor to the customs in 1695, a commissioner in 1711, and cashier of excise in 1715.
He was elected a Fellow of the Royal Society in 1708. He was also a governor of the Bridewell and Bethlehem Hospital. He died at his chambers in Lincoln's Inn on 16 March 1724.
Bridges's collection of books and prints was sold by auction soon after his death. A portrait of him, painted by Sir Godfrey Kneller in 1706, was engraved by George Vertue in 1726.
In 1718 he was elected a Fellow of the Society of Antiquaries, and in the following year he began the formation of voluminous manuscript collections for the history of Northamptonshire. He made a circuit of the county, and employed several persons to make drawings, collect information, and transcribe monuments and records. In this manner he expended several thousand pounds. It was his intention to make another personal survey of the county, but before he could carry this design into effect he fell ill and died.