|Sovereign state||United Kingdom|
|Fire||Mid and West Wales|
Treffynnon is a hamlet of about twenty houses located between St.Davids and Fishguard, about a mile inland from the A487 at Croesgoch in Pembrokeshire. On the edge of the village stands Treffynnon Chapel, a Welsh Calvinistic Methodist foundation, originally built in 1867 and rebuilt in 1876. Treffynnon has only one named road with the unusual address of Council Houses, a row of six local authority dwellings dating from the 1960s known locally as The Street.
- "TREFFYNNON CHAPEL (WELSH CALVINISTIC METHODIST), TREFFYNNON". www.coflein.gov.uk. Retrieved 2019-02-02.