:Treffynnon, Pembrokeshire

{{Use dmy dates|date=October 2019}}

{{Infobox UK place

| country = Wales

| static_image_name = Centre of the village, Treffynnon - geograph.org.uk - 3683564.jpg

| static_image_caption =

| official_name = Treffynnon

| community_wales = Brawdy

| coordinates = {{coord|51|55|N|5|08|W|display=title,inline}}

| map_type = Wales

| population =

| population_density =

| unitary_wales = Pembrokeshire

| lieutenancy_wales = Dyfed

| constituency_westminster = Preseli Pembrokeshire

| constituency_welsh_assembly = Preseli Pembrokeshire

| post_town = Haverfordwest

| postcode_district = SA62

| postcode_area = SA

| dial_code =

| os_grid_reference =

}}

Treffynnon (Welsh: tref - town + ffynnon - spring, well) is a hamlet of about twenty houses located in the community of Brawdy, 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.{{Coflein|num=11085 |desc=Treffynnon Chapel (welsh Calvinistic Methodist), Treffynnon |access-date=29 September 2021}} 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.