Cwm Penmachno
| Cwm Penmachno | |
|---|---|
| Houses in Cwm Penmachno, showing the quarry behind | |
| Location within Conwy | |
| OS grid reference | SH750472 | 
| Community | |
| Principal area | |
| Country | Wales | 
| Sovereign state | United Kingdom | 
| Post town | BETWS-Y-COED | 
| Postcode district | LL24 | 
| Dialling code | 01690 | 
| Police | North Wales | 
| Fire | North Wales | 
| Ambulance | Welsh | 
| UK Parliament | |
| Senedd Cymru – Welsh Parliament | |
Cwm Penmachno (historically called Tre-Gynwal) is a village at the head of Cwm Machno in North Wales.