Premiership of William Pitt may refer to: Premiership of William Pitt, 1st Earl of Chatham, as prime minister of Great Britain, 1766–1768 First premiership of William Pitt the Younger, as prime minister of Great Britain and the United Kingdom, 1783–1801 Second premiership of William Pitt the Younger, as prime minister of the United Kingdom, 1804–1806
See also Great Britain in the Seven Years' War Pitt ministry (disambiguation) United Kingdom in the Napoleonic Wars William Pitt (disambiguation)