John Lumsden Propert (9 April 1834 – 7 March 1902) was an English physician and art critic.
He obtained the diploma of the Royal College of Surgeons of England and the licence of the Society of Apothecaries in 1855, and in 1857 he graduated M.B.
He then joined his father in general practice in New Cavendish Street, London, and became highly successful.
His house, 112 Gloucester Place, Portman Square, was filled with beautiful specimens of Wedgwood, bronzes, and jewelled work.
Propert died at his house in Gloucester Place on 7 March 1902, and was buried at Brookwood cemetery.