Barrier Dunes
{{Short description|Mountain in America}}
{{Use mdy dates|date=January 2025}}
{{Multiple issues|{{Orphan|date=January 2025}}
{{One source|date=January 2025}}}}
{{Infobox mountain
| name = Barrier Dunes
| photo =
| photo_caption =
| map = Massachusetts#USA
| map_caption = Location of Barrier Dunes in Massachusetts
| elevation_ft = 2
| elevation_ref =
| location = Cape Cod, Massachusetts
| range =
| coordinates = {{coord|41.5728923|-69.9889038|region:US|format=dms}}{{cite gnis
| id = 616743
| name = Barrier Dunes
| accessdate = 2018-08-20}}
| topo = USGS Wellfleet
| first_ascent =
| easiest_route =
}}
Barrier Dunes is a mountain in Barnstable County, Massachusetts. It is located on Monomoy Island, {{convert|2.3|mi}} north-northeast of Monomoy Point in the Town of Chatham.