Trelawney or Trelawny is a surname originating in Cornwall. It may refer to:
- Sir Jonathan Trelawny, 3rd Baronet, a Cornish bishop who was tried for his refusal to obey James II of England
- The Song of the Western Men, commonly considered to be the unofficial Cornish national anthem, popularly called Trelawny. It refers to a mooted attempt to rescue Jonathan Trelawny.
- Edward John Trelawny, biographer and novelist
- Sir William Trelawny, 18th Century Governor of Jamaica (see Trelawny Parish, Jamaica)
- "Trelawney", 21st Century English novelist, author of The Riot Party and other works of fiction.
Read more about Trelawney: Places, In Fiction, Other Uses