Osbert Cecil Molyneux, 6th Earl of Sefton,, styled The Honourable Osbert Molyneux until 1901, was a British courtier and Liberal politician. He served as Master of the Horse under Sir Henry Campbell-Bannerman from 1905 to 1907.
- Occupation
- politician, aristocrat
- Position held
- Member of the Privy Council of the United Kingdom, Master of the Horse (England), Deputy Lieutenant
- Citizenship
- United Kingdom, United Kingdom of Great Britain and Ireland
- Born
- February 21, 1871
