Coordinates: 50°07′08″N 5°34′41″W / 50.119°N 5.578°W
Tremethick Cross (from Cornish: Tre'nmedhek) is a hamlet around a crossroads two miles west of Penzance in west Cornwall, England, United Kingdom. It is on the A3071 road and is the site of a toll house.
Tremethick, Tremathick or Trereife cross is a stone Latin cross which was brought to this site from Rose-an-Beagle in the parish of Paul.