Glynfach (Welsh for 'small valley') is a district of the community and electoral ward of Cymmer, within the town of Porth, Rhondda Cynon Taf.

There are no shops in Glynfach, however there is one pub - The Colliers Arms - and one parish church - St. John's Church.

Glynfach consists of only a handful of streets, most of which are terraces.

Adjoining Glynfach is the small district of Britannia.

This Rhondda Cynon Taf location article is a stub.