Saint Dyfan was an obscure Welsh martyr and saint.
Dyfan may also refer to:
- Saint Deruvian, who is often mistakenly conflated with St Dyfan
- Merthyr Dyfan (Welsh for "martyrium of Dyfan"), a community and parish in southeastern Wales
- Dyfan, an electoral ward in the south Wales town of Barry
- Dyfan, Bishop of Bangor in northern Wales
Topics referred to by the same term