Rhianon is a Welsh given name of unknown etymology, though some suggest it may be derived from the Welsh word "rhianedd," meaning abundance or plenty. It is pronounced as /ˈriːəɹnɒn/. This unique and musical name has gained popularity in recent years, particularly in English-speaking countries. Rhianon is often associated with literature and music, as it was the name of a character in Dylan Thomas' play "Under Milk Wood," and it is also the title of a composition by John Adams for violin and orchestra. The name Rhianon offers parents an unusual yet charming option for their child's moniker, providing them with a distinctive identity while still being easy to pronounce and spell.
The name Rhianon experienced its peak popularity between 1976 and 2000, with the highest number of births occurring in 1978 (25). After 2000, there was a significant decline in the usage of this name.