St Aubyn may refer to
Places St Aubyn, Queensland, Australia
Organisations St Aubyn Centre, a mental health facility in Essex, England St Aubyns School, a boys' preparatory school in Rottingdean, England St Aubyn's School, a co-educational preparatory school, in London, England
People St Aubyn baronets of Cornwall, England Alan St. Aubyn, pen name of British author Frances L. Marshall (1839–1920) Amarah-Jae St. Aubyn (born 1994), British actor Catherine St Aubyn (1760–1836), English amateur artist Edward St Aubyn, English author and journalist James Piers St Aubyn (1815–1895), English architect, largely of churches John St Aubyn (disambiguation), several people Nick St Aubyn (born 1955), British Conservative politician, MP for Guildford Thomas St Aubyn (c. 1578 – 1637), English MP for St Ives and then Grampound William St. Aubyn (by 1526 – 1558/1571), English MP for Helston, West Looe and Camelford St. Aubyn Hines (born 1972), Jamaican Olympic boxer