Bala Cynwyd is a community and census-designated place in Lower Merion Township, Pennsylvania, United States. It is located on the Philadelphia Main Line in Southeastern Pennsylvania and borders the western edge of Philadelphia at U.S. Route 1. The present-day community was originally two separate towns, Bala and Cynwyd, but was united as a singular community largely because the U.S. Post Office, the Bala Cynwyd branch, served both towns using ZIP Code 19004. The combining of the communities gives a total population of 9,285 as of the 2020 census. The community was long known as hyphenated Bala-Cynwyd. Bala and Cynwyd are currently served by separate stations on SEPTA's Cynwyd Line of Regional Rail.

Lower Merion Township is a township in Montgomery County, Pennsylvania, United States. It is part of the Philadelphia Main Line. The township's name originates with the county of Merioneth in north Wales. Merioneth is an English-language transcription of the Welsh Meirionnydd.