William Brouncker, 2nd Viscount Brouncker, FRS was an Anglo-Irish peer and mathematician who served as the president of the Royal Society from 1662 to 1677. Best known for introducing Brouncker's formula, he also worked as a civil servant, serving as a commissioner in the Royal Navy. Brouncker was a friend and colleague of Samuel Pepys, and features prominently in the Pepys' diary.
- Occupation
- mathematician, university teacher
- Position held
- President of the Royal Society, Lord Keeper of the Great Seal, chairperson
- Citizenship
- Kingdom of England
- Born
