John Pitt, 2nd Earl of Chatham (9 October 1756 - 24 September 1835) was the eldest son of Pitt the Elder, and elder brother to Pitt the Younger. He served in various capacities in the Tory cabinets of the late 18th and early 19th centuries.

He married Mary Townshend.

|- style="text-align: center;" | width="30%" |Preceded by:
The Earl Spencer | width="40%" style="text-align: center;" |Lord Privy Seal
1794–1798 | width="30%" |Succeeded by:
The Earl of Westmorland

|- style="text-align: center;" | width="30%" |Preceded by:
The Earl of Mansfield | width="40%" style="text-align: center;" |Lord President of the Council
1796–1801 | width="30%" |Succeeded by:
The Duke of Portland

|- style="text-align: center;" | width="30%" |Preceded by:
The Marquess Cornwallis | width="40%" style="text-align: center;" |Master-General of the Ordnance
1801–1806 | width="30%" |Succeeded by:
The Earl of Moira

|- style="text-align: center;" | width="30%" |Preceded by:
The Earl of Moira | width="40%" style="text-align: center;" |Master-General of the Ordnance
1807–1810 | width="30%" |Succeeded by:
The Lord Mulgrave