:Treflys

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

{{Infobox UK place

| country = Wales

| welsh_name =

| official_name = Treflys

| static_image =

| coordinates = {{coord|52.145|-3.605|region:GB|display=inline,title}}

| cardiff_distance_mi = 49.9

| cardiff_distance_km = 80.4

| london_distance_mi = 154.4

| london_distance_km = 248.5

| unitary_wales = Powys

| community_wales = Treflys

| constituency_welsh_assembly =

| constituency_westminster =

| post_town = LLANGAMMARCH WELLS

| postcode_district = LD4

| postcode_area = LD

| post_town1 = LLANWRTYD WELLS

| postcode_district1 = LD5

| postcode_area1 = LD

| dial_code =

| os_grid_reference = SN 903 508

| population = 484

| map_type = nomap

| module= 240px
Map of the community

}}

Treflys is a community in the county of Powys, Wales, and is 49.9 miles (80.4 km) from Cardiff and 154.4 miles (248.5 km) from London.[http://www.e-gymraeg.com/enwaucymru/chwilio.aspx/Treflys Bangor University Placenames Unit (Canolfan Bedwyr)]; accessed 9 May 2014{{cite map|title=Google Maps|publisher=Google}} In 2011 the population of Treflys was 484 with 15.1% of them able to speak Welsh.[http://wales.gov.uk/statistics-and-research/census-population/?lang=en Welsh Government website; 2011 Census Returns and stats]; accessed 9 May 2014 It is in the historic county of Brecknockshire.

The villages of Beulah, Llanfechan and Garth lies within the community. Eglwys Oen Duw is a Grade II* Listed Building situated between Beulah and Abergwesyn, approximately 1.2 km NW of Beulah village.[http://www.britishlistedbuildings.co.uk/wales/powys/treflys www.britishlistedbuildings.co.uk website]; accessed 10 May 2014. Treflys, in the Middle Ages was a "Cwmwd" within the Cantref of Buellt.

For elections to Powys County Council, Treflys is covered by the Llanwrtyd Wells electoral ward.