:Aberoer
{{Short description|Village in Wales}}
{{Use dmy dates|date=September 2019}}
{{Infobox UK place
| country = Wales
| static_image_name = File:Aberoer Institute (geograph 2346635).jpg
| static_image_caption = The Aberoer Institute, a village hall.
| coordinates = {{coord|53.0335|-3.06744737|display=inline,title}}
| official_name = Aberoer
| welsh_name =
| population =
| population_ref =
| community_wales = Esclusham
| unitary_wales = Wrexham
| lieutenancy_wales = Clwyd
| constituency_westminster = Clwyd South
| constituency_welsh_assembly = Clwyd South
| post_town = WREXHAM
| postcode_district = LL14
| postcode_area = LL
| dial_code = 01978
| os_grid_reference = SJ 2851 4900
}}
Aberoer or Aber-oer[https://www.ordnancesurvey.co.uk/getoutside/local/aber-oer-wrexham-wrecsam Aber-oer, Wrexham], Ordnance Survey ({{IPA|cy|abɛrˈɔɨr|lang|LL-Q9309 (cym)-Jason.nlw-Aber-oer (Q48815851).wav|Welsh pronunciation|help=no}}) is a scattered settlement in Wrexham County Borough, Wales; prior to 1974 it was in Denbighshire. It is part of the community area of Esclusham, and is situated on the rural slopes of Esclusham Mountain above Rhostyllen. The placename can be translated from the Welsh language as "[the] cold stream".
There was once a small colliery at Aberoer, working some of the lowest coals in the Middle Coal Measures, though few records remain of it.Wedd and Smith, The geology of the country around Wrexham, 1928, p.52