Sir John Cust, 3rd Baronet

The Right Honourable Sir John Cust Bt PC
Sir John Cust, 3rd Baronet, dressed as Speaker of the House of Commons
Speaker of the House of Commons of Great Britain
In office 3 November 1761 – 19 January 1770
Monarch	George III
Prime Minister	Thomas Pelham-Holles John Stuart George Grenville Charles Watson-Wentworth William Pitt Augustus FitzRoy
Preceded by	Arthur Onslow
Succeeded by	Sir Fletcher Norton

Sir John Cust, 3rd Baronet PC (29 August 1718 – 24 January 1770), of Belton House near Grantham in Lincolnshire, was a British politician who served as Speaker of the House of Commons from 1761 to 1770.