Cynwyd may refer to:
Places: Cynwyd, Denbighshire, in Wales Bala Cynwyd, or Cynwyd, a community in Lower Merion Township, Pennsylvania, USA
Transportation: Cynwyd Line, a SEPTA Regional Rail line in Pennsylvania Cynwyd station (SEPTA), a SEPTA Regional Rail station in Bala Cynwyd, Pennsylvania, USA Cynwyd railway station (Wales), a former railway station in Cynwyd, Denbighshire, Wales
Other: Cynwyd of Alt Clut, or Cinuit (6th century), possible ruler of Alt Clut in modern-day Scotland Cynwyd Forest Quarry, a protected area in Denbighshire, Wales