Traherne, Trahern, or Treherne is a Welsh surname, and may refer to:
Cennydd Traherne (1910–1995), Welsh landowner John Treherne (1929–1989), English entomologist John Montgomery Traherne (1788–1860), Welsh Anglican priest and antiquarian Llewelyn Traherne (1766–1842), Welsh magistrate, High Sheriff of Glamorgan in 1801 Margaret Traherne (1919–2006), British artist Philip Traherne (1635–1686), English diplomat and author Thomas Traherne (c. 1636 – 1674), English poet and religious writer Thomas Trahern (officer of arms) (died 1542), English officer-of-arms, Somerset Herald
See also Traherne Island, one of two islands contained within the Motu Manawa (Pollen Island) Marine Reserve Treherne (disambiguation)