Frederick Ponsonby
Frederick Ponsonby may refer to:
- Frederick Ponsonby, 3rd Earl of Bessborough, Anglo-Irish peer
- Frederick Ponsonby (1775-1849), MP for Galway Borough 1811–1813
- Frederick Ponsonby (British Army officer), British military officer, second son of the 3rd Earl of Bessborough
- Frederick Ponsonby, 6th Earl of Bessborough, English peer and cricketer
- Frederick Ponsonby, 1st Baron Sysonby, British soldier and courtier
- Frederick Ponsonby, 10th Earl of Bessborough, British diplomat, businessman, playwright, politician, and peer
- Frederick Ponsonby, 4th Baron Ponsonby of Shulbrede, British peer and Labour Party politician