"Hen Wlad Fy Nhadau" is the de facto national anthem of Wales. The title, taken from the first words of the song, means "The Old Land of My Fathers" in Welsh, usually rendered in English as simply "Land of My Fathers". The words were written by Evan James and the tune composed by his son, James James, both residents of Pontypridd, Glamorgan, in January 1856. The earliest written copy survives and is part of the collections of the National Library of Wales.

A national anthem is a patriotic musical composition symbolizing and evoking eulogies of the history and traditions of a country or nation. The majority of national anthems are marches or hymns in style. American, Central Asian, and European nations tend towards more ornate and operatic pieces, while those in the Middle East, Oceania, Africa, and the Caribbean use a more simplistic fanfare. Some countries that are devolved into multiple constituent states have their own official musical compositions for them ; their constituencies' songs are sometimes referred to as national anthems even though they are not sovereign states.