Major-General Sir John Mark Frederick Smith KH FRS (11 January 1790 – 20 November 1874) was a British general and colonel-commandant of the Royal Engineers.

He was son of Major-general Sir John Frederick Sigismund Smith, K.C.H., of the Royal Artillery (died 1834), and grand-nephew of Field-marshal Friedrich Adolf, Count von Kalckreuth, commander-in-chief of the Prussian army.

He also took part, in the same year, in the capture of the islands of Zante and Kephalonia under Major-General Frederick Rennell Thackeray, commanding Royal Engineer of the force of Sir John Oswald.

He was mentioned in Sir John Oswald's despatches, and some years afterwards an effort was unsuccessfully made to get him a brevet majority for his services at Santa Maura.

He served in Albania and in Sicily, and in 1812 returned to England to take up the appointment of adjutant to the corps of the Royal Sappers and Miners at their headquarters at Woolwich on 1 December.

In 1841 Smith, in conjunction with Professor Peter Barlow, made a report to the treasury respecting railway communication between London, Edinburgh, and Glasgow.

On 9 November 1846 Smith was promoted to be colonel in the army, and on 1 May 1851 he was moved from Chatham to be commanding Royal Engineer of the southern district, with his headquarters at Portsmouth.

Smith died on 20 November 1874 at his residence, 62 Pembridge Villas, Notting Hill Gate, London, and was buried in Kensal Green cemetery.

Smith was the author of 'The Military Course of Engineering at Arras,’ Chatham, 1850, and he translated, with notes, Marshal Marmont's 'Present State of the Turkish Empire,’ London, 1839; 2nd ed.