Jean Tijou was a French Huguenot ironworker. He is known solely through his work in England, where he worked on several of the key English Baroque buildings. Very little is known of his biography. He arrived in England in c. 1689 and enjoyed the patronage of William III and Mary II. He left England for the continent c. 1712. He was father-in-law to Louis Laguerre who married in St Martin-in-the-Fields.
His major commissions include gates and railings for Hampton Court Palace, where he worked between 1689 and 1700; he was paid £2,160 2s 0.25d for the wrought iron screens at Hampton Court. He also is known to have worked at Kensington Palace. He produced the screens and grilles of St Paul's Cathedral for Sir Christopher Wren, and worked at country houses such as Easton Neston, Burghley and Chatsworth. At Chatsworth his surviving works include the balustrade of the upper flight of the grand staircase and the set of gates known as the Golden Gates, which were moved to their present location at the north entrance to the park in the 19th century.
Little else is known of the man, Jean Tijou, other than that he was a master metalworker.