William Parsons, 3rd Earl of Rosse, was an Irish engineer and astronomer. He built several giant telescopes.
- Occupation
- astronomer, politician
- Position held
- member of the 11th Parliament of the United Kingdom, President of the Royal Society, Lord-Lieutenant, member of the House of Lords
- Citizenship
- United Kingdom of Great Britain and Ireland, Kingdom of Great Britain
- Born
- June 17, 1800
- Died
- October 31, 1867