John Buckler, (30 November 1770 – 6 December 1851) was a topographical artist and architect.
He is remembered for his many drawings of historic buildings. Shortly after 1800 he was commissioned by Richard Colt Hoare of Stourhead to produce ten volumes of drawings of churches and other historic buildings in Wiltshire. Buckler's grandson described this commission as "deciding his brains for antiquarian pursuits". It was followed by similar commissions from other antiquarians and by the end of his life, by his own account, Buckler had produced around 13,000 drawings of buildings. Many of the buildings Buckler drew had not been previously recorded, and many have since been demolished or substantially altered, so this is now a valuable source of information on British architectural history.His work was exhibited at the Royal Academy every year from 1798 until 1849, and he became a Fellow of the Society of Antiquaries of London in 1810.