The Donegal fiddle tradition is a type of Irish traditional music, based on a two-hundred year-old tradition (or possibly set of coexisting traditions) of playing the fiddle in County Donegal, Ireland.^[1] Donegal is a partly Irish-speaking highland-county in northwestern Ireland and one of the three counties of the northern Irish province of Ulster that are part of the Republic of Ireland.^[2]

The tradition has several distinguishing traits, most of which involves styles of bowing and the ornamentation of the music, as well as the rhythm. Another characteristic of the style is the rapid pace at which it tends to proceed.^[1] Modern players, such as the fiddle groupAltan, continue to be popular due to a variety of reasons