John Tidd Pratt (13 December 1797 – 9 January 1870) was an English barrister and civil servant.

He was admitted a student at the Inner Temple on 2 April 1819, was called to the bar on 26 November 1824, and went the home circuit.

From 1828 to his death he was consulting barrister to the commissioners for the reduction of the national debt.

To the public he rendered efficient service, by disclosing, as far as official restraints allowed him, the unsound condition of some of the benefit and friendly societies, and by recommending to the legislature modes of remedying their defects.

He was in the commission of the peace for Middlesex, Westminster, Kent, Surrey, Sussex, and the Cinque ports.