Tregarthen can refer to:
- A village near Goldsithney in Cornwall.
- Tregarthen's Hotel
- John Coulson Tregarthen (1854–1933), British naturalist and writer
- Enys Tregarthen (pseudonym), British writer Nellie Sloggett (1851–1923)
This disambiguation page lists articles associated with the title Tregarthen.
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