Trelowth (also Trelowith, or Trelowthe, or Trelowthes; meaning, "the town place of trees") is a hamlet in Cornwall, England, United Kingdom. It lies 2.3 miles (3.7 km) by road southwest of central St Austell, and is situated immediately to the northwest of Polgooth. The hamlet is part of the parish of St Mewan.