Cefnddwysarn

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

{{Infobox UK place

| country = Wales

| official_name = Cefnddwysarn

| welsh_name =

| coordinates = {{coord|52.934|-3.540|display=inline,title}}

| static_image_name = Entering Cefn-ddwysarn (geograph 3393721).jpg

| static_image_caption = Entering Cefnddwysarn

| population =

| population_ref =

| community_wales = Llandderfel

| unitary_wales = Gwynedd

| lieutenancy_wales =

| constituency_welsh_assembly = Dwyfor Meirionnydd

| constituency_westminster = Dwyfor Meirionnydd

| post_town = BALA

| postcode_district = LL23

| postcode_area = LL

| dial_code = 01678

| os_grid_reference = SH965385

| cardiff_distance =

}}

Cefnddwysarn ({{pronunciation|Cefnddwysarn.ogg|Welsh pronunciation|help=no}}) is a small village in Gwynedd, Wales.

It is located on the A494 road approximately 3 miles east of the town of Bala and 8 miles west of Corwen. The village is situated within the traditional county of Merionethshire, and the community of Llandderfel.