Scillonian may refer to:
An adjective for people or things related to the Isles of Scilly, off the Cornish peninsula of Great Britain Scillonian entrance grave, megalithic chamber tombs in the British Isles Scillonian (magazine), a quarterly magazine first published in 1925
Ships Scillonian (1925), a passenger ferry in service from 1926 to 1956 Scillonian (1955), a passenger ferry in service from 1956 to 1977 RMV Scillonian III, a passenger ferry in service since 1977