Rhondda or Rhondda Valley is a former coal mining community in Wales. The area is actually two valleys: the larger Rhondda Fawr valley (mawr large) and the smaller Rhondda Fach valley (bach small). The singular term 'Rhondda Valley' and the plural 'Rhondda Valleys' are both commonly used.
- Blaencwm a district of Treherbert.
- Blaenrhondda a district of Treherbert.
- Cwm Clydach a community.
- Cwmparc a district of Treorchy.
- Cymmer a district of Porth.
- Dinas Rhondda a district of Penygraig.
- Edmondstown a district of Penygraig.
- Gelli a district of Ystrad
- Glynfach a district of Cymmer
- Llwynypia a community.
- Pentre a community.
- Penygraig a community
- Porth a community that sees itself as the unofficial capital of the Rhondda, mainly due to its geographic location.
- Ton Pentre a district of Pentre.
- Tonypandy a community.
- Trealaw a community.
- Trebanog a district of Cymmer
- Trehafod the most southernmost and smallest of the Rhondda Valley communities.
- Treherbert a community.
- Treorchy the largest community in either of the valleys.
- Tynewydd a district of Treherbert
- Williamstown a district of Penygraig.
- Ynyswen a district of Treorchy.
- Ystrad a community.
The Rhondda Fach is the smaller of the two valleys. Villages include Wattstown, Ynyshir, Pontygwaith, Ferndale, Tylorstown and Maerdy. The settlements that make up the Rhondda Fach are as follows: